Em. Univ. Prof. Dr. Heinz Falk

Phone: +43-732-2468-8749
email: heinz.falk at jku.at (" at "=@)

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Research Interests



Research Interests

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Main research area in our group is chemistry, synthesis, stereochemistry and photochemistry of plant and animal photosensitizing and photosensory pigments. The main group of compounds considered to be interesting are pigments derived from the fundamental phenanthro[1,10,9,8-opqra]perylene-7,14-dione chromophore with natural pigments like hypericin , stentorin , the fringelites , the gymnochromes, and blepharismin.
Furthermore we are focusing on hemin-analogous corrphycene derivatives (e.g. as potential blood substitutes and heme oxygenase blocker) as well as on other natural compounds such as the natural sun blocker urocanic acid.
Besides these topics research on applied problems of industrial relevance, like oxidation, ozonization, non natural amino acids and catalysis are pursued

Dissertations (at JKU in Linz)

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G. Kapl
Synthese und Konformationsbeeinflussung von chiralen 2,3-Dihydrobilatrien-abc-Derivaten
September 1985

D. Eichinger
Tripyrrinoide Systeme als Ionophore fuer den passiven und sekundaeren aktiven Transport in Fluessigmembranen
February 1986

W. Medinger
Struktur und Circulardichroismus chiraler Derivate von 2,3-Dihydrobilatrienen-abc
May 1987

M. Marko
Synthese, Struktur und Eigenschaften bi- und oligochromophorer Systeme mit di- oder tetrapyrrolischen Einheiten
January 1990

H. Woess
Synthese und Konformationsanalyse von 10-substituierten mono- und bichromophoren Bilindionen
January 1990

H. Marko
Darstellung, Reaktivitaet und spektroskopische Untersuchungen von Gallenfarbstoff-Apomyoglobin - Komplexen
June 1990

K. A. Hackl
Zur Chemie N-substituierter Harnstoffe: Untersuchungen ôber oekologisch vorteilhafte Moeglichkeiten der Gewinnung von Isocyanaten durch Zersetzung von N-substituierten Harnstoffen
April 1991

G. Schoppel
Zur Synthese von Hypericin und Isohypericin
December 1991

W. Schmitzberger
Zur Struktur natuerlich vorkommender Hypericin-Systeme
May 1992

M. Oberreiter
Amino- und Iminoderivate chinoider Systeme
April 1993

A. Suste
Pyridinologous Linear Tri- and Tetrapyrroles
July 1993

Ch. Etzlstorfer
Tautomerie und Stereochemie von Verbindungen des Hypericintyps: Kraftfelduntersuchungen
September 1993

J. Meyer
Assoziationsverhalten und spektroskopische Eigenschaften von Hypericin
October 1993

G. Teubl
Alkoxyalkylhydroperoxide als Oxidationsmittel in der organischen Chemie
February 1995

T.N.H. Tran
Long Chain Aldehydes as Precursors for the Synthesis of Natural Products and Natural Products Conjugates
October 1995

E. Mayr
Studien zu den natuerlich vorkommenden Hydroxyphenanthroperylenchinonen Fringelit D, Stentorin und Blepharismin
May 1996

R. Altmann
Hypericin-C-Konjugate: Darstellung, Eigenschaften, Funktionsmoeglichkeiten
April 1997

T. G. Dax
Studies Concerning the Photoreceptor Pigments of Stentor coeruleus and Blepharisma japonicum
May 2000

Roland Obermüller
Synthese von Hypericinderivaten als potentielle Wirkstoffe für die photodynamische Therapie
September 2001

Thorsten Ganglberger
Metal-Catalyzed Oxidations using Ozone
January 2003

Bettina Schwarzinger
Zur Photochemie zweier physiologisch relevanter Naturstoffe
January 2004

Martin Emsenhuber
Studies on chemical generation of singlet oxygen

Bernd Lackner
Syntheses and Investigations Concerning Heteroatom Containing Hypericin Derivatives as Potentially New Drugs for the Application in Photodynamic Therapy of Cancer
April 2004

Mario Waser
9,12-disubstituted hypericin derivatives as potential second generation hypericin based photosensitizers
October 2005

Joachim Zuschrader
An Access to Glyco-Substituted Hypericin Derivatives
January 2008

David Geisslmeir
Hypericin Nucleo Base Hybrid Derivatives as Potential Second Generation Photosensitizers
January 2008

Stefan Aigner
Conjugated Porphyrin-Hypericin-Hybrids Using Microwave Assisted Hypericin Syntheses
Februar 2008


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H. Falk
"The Chemistry of Linear Oligopyrroles and Bile Pigments", XI + 621p., 344 Abb., Springer, Wien, 1989; and Mh.Chem. Supplement 1989

H. Falk, K. Grubmayr und M. Marko
Beitraege zur Chemie der Pyrrolpigmente, 85. Mitt.: Darstellung und Lumineszenz hetero-bichromophorer Oligopyrrol-Systeme
Monatsh. Chem. 121, 209 (1990)

H. Falk und H. Woess
Beitraege zur Chemie der Pyrrolpigmente, 86. Mitt.: Darstellung, Struktur und Eigenschaften bichromophorer 10-Arylbilin-1,19-dione
Monatsh. Chem. 121, 317 (1990)

H. Marko, N. Mueller und H. Falk
Nuclear Magnetic Resonance Investigations of the Biliverdin?Apomyoglobin Complex
Eur. J. Biochem. 193, 573 (1990)

H. Falk, H. Marko, N. Mueller, W. Schmitzberger und H. Stumpe
Reconstitution of Apomyoglobin with Bile Pigments
Monatsh. Chem. 121, 893 (1990)

H. Falk, H. Marko, N. Mueller und W. Schmitzberger
On the Chemistry of Pyrrole Pigments 87.Mitt.: The Apomyoglobin Heme Pocket as a Reaction Vessel in Bile Pigment Chemistry
Monatsh. Chem. 121, 903 (1990)

H. Falk und H. Marko
Reduction of a Bilindione-10-Thiol-Adduct as a Model for the Reduction Step of the Biliverdin Reductase System
Monatsh. Chem. 122, 319 (1991)

U. Wagner, C. Kratky, H. Falk und H. Woess
Crystal Structure and Conformation of 10-Aryl-bilatrienes-abc
Monatsh. Chem. 122, 749 (1991)

H. Falk und G. Schoppel
A Synthesis of Emodin Anthrone
Monatsh. Chem. 122, 739 (1991)

H. Falk and W. Schmitzberger
On the Nature of "Soluble" Hypericin in Hypericum Species
Monatsh. Chem., 123, 731 (1992)

H. Falk and D. Hemmer
On the Chemistry of Pyrrole Pigments, 88. Mitt.: Nonlinear Optical Properties of Linear Oligopyrroles
Monatsh. Chem. 123, 779 (1992)

H. Falk and G. Schoppel
On the Synthesis of Hypericin by Oxidative Trimethylemodin Anthrone and Emodin Anthrone Dimerization: Isohypericin
Monatsh. Chem. 123, 931 (1992)

K. Hackl und H. Falk
N-Alkylation of Ureas
US Nr. 5.169.954 (8.12.1992)

H. Falk and W. Schmitzberger
On the Bromination of Hypericin: The Gymnochrome Chromophores
Monatsh. Chem. 124, 77 (1993)

C. Etzlstorfer, H. Falk, N. Mueller, W. Schmitzberger and U. Wagner
Tautomerism and Stereochemistry of Hypericin: Force Field, NMR, and X-ray Crystallographic Investigations
Monatsh. Chem., 124, 751 (1993)

H. Falk and A. Suste
On the Chemistry of Pyrrole Pigments, XC: Pyridinologous Linear Tri- and Tetrapyrroles
Monatsh. Chem., 124, 881 (1993)

H. Falk, J. Meyer and M. Oberreiter
A Convenient Semisynthetic Route to Hypericin
Monatsh. Chem., 124, 339 (1993)

C. Etzlstorfer and H. Falk
Tautomerism and Stereochemistry of Isohypericin, Bromo-hypericines, and Gymnochromes: Force Field Investigations
Monatsh. Chem., 124, 1031 (1993)

H. Pschierer, J. Friedrich, H. Falk and W. Schmitzberger
On the Correlation Between Pressure Shift and Solvent Shift: A Spectral Hole Burning Study
J. Phys. Chem., 97, 6902 (1993)

A. Angerhofer, H. Falk, J. Meyer and G. Schoppel
The Lowest Triplet States of Hypericin and Isohypericin
J. Photochem. Photobiol., B20, 133 (1993)

K. Hackl und H. Falk
Pure N,N'-unsymmetrically substituted Phenyl Ureas
U.S.A. Pat.Nr. 5283362 (1.2.1994)

A. Hackl, M. Muellner, E. Schulz, G. Stern und H. Falk
Isocyanic Acid by Decomposition of N,N-trisubstituted Ureas
Eur. Pat. EP 0582863A2 (16.2.1994)
US Pat. Nr. 5.360.601 (1.11.1994)

A. Hackl und H. Falk
Isocyanates by Decomposition of N,N,N-trisubstituted Ureas
Eur. Pat. EP 0583637A1 (23.2.1994)

H. Falk and A. Suste
On the Chemistry of Pyrrole Pigments, XCI: Copper Complexes of Pyridinologous Linear Tri- and Tetrapyrroles as Cyclopropanation Catalysts
Monatsh. Chem., 125, 325 (1994)

H. Falk and J. Meyer
On the Homo- and Heteroassociation of Hypericin
Monatsh. Chem., 125, 753 (1994)

C. Etzlstorfer and H. Falk
Stereochemistry and Tautomerism of Stentorin, Isostentorin, and Fringelit D: Force Field Investigations
Monatsh. Chem., 125, 955 (1994)

H. Falk, E. Mayr and A. Richter
Simple Diffuse Reflectance UV-Vis Spectroscopic Determination of Organic Pigments (Fringelites) in Fossils
Microchim. Acta, 117, 1 (1994)

H. Falk and J. Leimhofer
Ozone as an Oxygen Source for Alkene Ene-Reactions
Monatsh. Chem., 126, 85 (1995)

Q.-Q. Chen, H. Falk and R. Micura
On the Chemistry of Pyrrole Pigments, XCII: Syntheses of 1,2-Bis-pyrrolylethanes
Monatsh. Chem., 126, 473 (1995)

H. Falk, C. Kratky, N. Mueller, W. Schmitzberger and U. Wagner
Structure Determination of the Biliverdin Apomyoglobin Complex. Crystal Structure Analysis of Two Crystal Forms at 1.4 and 1.5 * Resolution
J. Mol. Biol., 247, 326 (1995)

N. H. Tran-Thi and H. Falk
An Efficient Synthesis of the Plant Growth Hormone 1-Triacontanol
Monatsh. Chem., 126, 565 (1995)

H. Falk and A. F. Vaisburg
Concerning the Absorption and Emission Properties of Phenanthro [1,10,9,8,o,p,q,r,a]perylene-7,14-dione
Monatsh. Chem., 126, 361 (1995)

H. Falk and E. Mayr
Syntheses and Properties of Fringelite D (1,3,4,6,8,10,11,13-octahydroxy-phenanthro[1,10,9,8,o,p,q,r,a]perylene-7,14-dione)
Monatsh. Chem., 126, 699 (1995)

H. Falk, A.F. Vaisburg and A.M. Amer
On the Synthesis of w-Appended Hypericin Derivatives
Monatsh. Chem., 126, 993 (1995)

R. Altmann and H. Falk
On the Syntheses and Chiroptical Properties of the Tri- and Tetragalloylquinic Acids
Monatsh. Chem. 126, 1225 (195)

D. Shemin and H. Falk
Porphyrins and Bile Pigmens, Metabolism Encyclopedia of Human Biology, 2nd Ed.,
Academic Press, 177 (1996)

H. Falk and Q.-Q. Chen
On the Chemistry of Pyrrole Pigments, XCVI: An Efficient Synyhesis of Corrphycenes
Mh. Chem., 127, 69 (1996)

H. Falk and E. Mayr
Syntheses, Constitutions, and Properties of Stentorin and Isostentorin
Mh. Chem., 126, 1311 (1995)

H. Falk and T.N.H. Tran
Synthesis and Properties of an w,wÕ - Appended Eigtheen Carbon Chains Hypericin Derivative
Mh. Chem., 127, 717 (1996)

C. Etzlstorfer, H. Falk, N. Mueller and T.N.H. Tran
Structural Aspects and Electronic Absorption of the Hydroxyphenanthroperylene Quinones Fringelit D, Hypericin, and Stentorin
Mh. Chem., 127, 659 (1996)

C. Etzlstorfer, H. Falk, E. Mayr and S. Schwarzinger
Concerning the Acidity and Hydrogen Bonding of Hydroxyphenantroperylene Quinones, like Fringelite D, Hypericin, and Stentorin
Mh. Chem., 127,1229 (1996)

R. Altmann, C. Etzlstorfer and H. Falk
Chiroptical Properties and Absolute Configurations of the Hypericin Chromophore Propeller Enantiomers
Mh. Chem., 128, 785 (1997)

H. Falk and M. Stanek
Two-Dimensional 1H and 13C NMR Spectroscopy and the Structural Aspects of Amylose and Amylopectin
Mh. Chem., 128, 777 (1997)

H. Falk, A.A.O. Sarhan, H.T.N. Tran and R. Altmann
Synthesis and Properties of Hypericins Substituted with Acidic and Basic Residues: Hypericin Tetrasulfonic Acid – a Water Soluble Hypericin Derivative
Mh. Chem., 129, 309 (1998)

E.I. Kapinuns, H. Falk and T.N.H. Tran
Spectroscopic Investigaion of the Molecular Structures of Hypericin and its Salts
Mh. Chem., 130, 1237 - 1244 (1999)

A.M. Amer, H. Falk, H.N.T. Tran
The Dissociation and Tautomerization Equilibria of Hypericin: Alkyl Protected Hydroxyl Derivatives
Mh. Chem., 130, 623 - 635 (1999)

R. Obermüller, G. Schütz, H. Gruber and H. Falk
Concerning Regioselective Photochemical Intermolecular Proton Transfer from Hypericin
Mh. Chem., 130, 275 - 281 (1999)

G. Kada, H. Falk and H. Gruber
Accurate Measurement of Avidin and Streptavidin in Crude Biofluids with a New, Optimized Biotin. Fluorescein Conjugate
Biochim. Biophys. Acta, 1427, 33 - 43 (1999)

C. Etzlstorfer, I Gutman and H. Falk
Concerning the Deprotonation ot the Photooxidized 3-Hypericinate Ion
Mh. Chem., 130, 1333 - 1339 (1999)

T. Dax, H. Falk and E. Kapinus

A Structural Proof for the Hypericin 1,6-Dioxo Tautomer
Mh. Chem., 130, 827 - 831 (1999)

H. Falk

Gosau Schleifsteine fuer den Fossiliensammler
Fossilien, 4, 248 - 250 (1999)

H. Falk
Vom Photosensibilisator Hypericin zum Photorezeptor Stentorin - die Chemie der Phenanthroperylenchinone
Angew. Chemie, 111, 3306 - 3326 (1999)

H. Falk
From the Photosensibilisator Hypericin to the Photoreceptor Stentorin - the Chemistry of the Phenanthroperylene Quinones
Angew. Chemie Int. Ed., 38, 3134 - 3154 (1999)

C. Etzlstorfer and H. Falk
Concerning the Association of Hypericin Tautomers and their Hypericinate Ions
Mh. Chem., 131, 333 - 340 (2000)

S. Baumgartner, T. Dax, W. Praznik and H. Falk

Characterization of the high-molecular weight fructan isolated from garlic (Allium sativum L.)
Carbohydrate Res., 328, 177 - 183 (2000)

T. Dax, E. Kapinus and H. Falk

A Remarkable Photoreaction of 3-O-Benzylhypericin
Helvetica Chimica Acta, 83, 1744 - 1752 (2000)

B. Immitzer, C. Etzlstorfer, R. Obermueller, M. Sonnleitner, G. Schuetz and H. Falk

On the Photochemical Proton Expulsion Capability of Fringelite D A Model of the Protist Photosensory Pigments of the Stentorin and Blepharismin Types
Mh. Chem., 131, 1039 - 1045 (2000)

T. Dax, C. Etzlstorfer and H. Falk

On the Ground State Energy Hypersurface of Blepharismins and Oxyblepharismins
Mh. Chem., 131, 1115 - 1122 (2000)

B. Immitzer and H. Falk

Fringelite D, a Model of the Protist Photosensory Pigments of the Stentorin and Blepharismin Types: the Hypericin and Fringelite D Photosensitized Destruction of Bilirubin
Mh. Chem., 131, 1167 - 1171 (2000)

T. Dax and H. Falk

An Unusual Photoreaction of 3,4,-Di-O-benzyl-hypericin
Mh. Chem., 131, 1217 - 1219 (2000)

Heinz Falk

Phototherapeutic and Photosensory Pigments: on the Chemistry of the Phenanthroperylene Quinones
Abstracts p. 299, The Second International Conference on Basic Sciences and Advanced Technology, Assiut, Nov. 5-8 (2000)

Heinz Falk (Coeditor)

Progress in the Chemistry of Organic Natural Products Vol. 79, 1-249 (2000)

Heinz Falk (Coeditor)

Progress in the Chemistry of Organic Natural Products Vol. 80, 1-251 (2000)

Roland Obermüller and Heinz Falk

Concerning the Absorption and Photochemical Properties of an w-4-Dimethylaminobenzal Hypercin Derivative
Mh. Chem., 132, 1519-1526 (2001)

B. Tu, Q. Chen, F. Yan, J. Ma, K. Grubmayr and H. Falk

Efficient Routes to w-Chloroalkyl Bilirubins and C12-N22 Bridged Biliverdins
Mh. Chem., 132, 693-705 (2001)

Heinz Falk

In memoriam Hulmut Ruis
Mh. Chem., 132 (12) V (2001)

E. Delaey, R. Obermüller, I. Zupko, H. Falk and P. de Witte

In vitro Study of the Photocytotoxicity of some Hypericin analogs on iefferent Cell Lines
Photochem. Photobiol. 74, 164-171, 2001

Roland Obermüller, Thomas Dax and Heinz Falk

Replacement of Methoxy- to tert-Butyl-Substitution on a Napththalene Residue - An Unexpected Reaction Observed During a Snieckus ortho-Lithiation
Mh. Chem., 132, 1057-1062 (2001)

Roland Obermüller, Karin Hohenthanner and Heinz Falk

Towards Hypericin-Derived Potential Photdynamic Therapy Agents
Photochem. Photobiol., 74, 211-215, 2001

Thomas Dax, Eugenius Kapinus and Heinz Falk

A Remarkable Photoreaction of 3-O-Benzylhypericin, in M.V. Kisakürek (ed.) "Hominatio - An International Tribute to Albert 'Eschenmoser"
Willey - VCH, pp 1744-1752 (2001)

Heinz Falk

Progress in the Chemistry of Natural Products, Vol. 81, 1-313 (2001)

Heinz Falk

Progress in the Chemistry of Natural Products, Vol. 82, 1-292 (2001)

Heinz Falk (Coeditor)

Progress in the Chemistry of Organic Natural Products Vol. 83, 1-673 (2002)

Heinz Falk (Coeditor)
Progress in the Chemistry of Organic Natural Products Vol. 84, 1-253 (2002)

R.A. Obermüller, C. Etzlstorfer and H. Falk
On the Chemistry of a Dibenzohypericin Derivative;
Mh. Chem., 133, 89-96 (2002)

J. Leonhartsberger and H. Falk
The Protonation and Deprotonation Equilibria of Hypericin Revisited;
Mh. Chem., 133, 167-172 (2002)

B. Lackner and H. Falk
Concerning the Diastereomerization of Stilbenoid Hypericin Derivatives;
Mh. Chem., 133, 717-721 (2002)

T.N. Tran and H. Falk
Concerning the Chiral Discrimination and Helix Inversion Barrier in Hypericinates and Hypericin Derivatives;
Mh. Chem.,133, 1231-1237

M. Emsenhuber, P. Pöchlauer, J.-M. Aubry, V. Nardello and Heinz Falk
Evidence for the Generation of Singlet Oxygen (1O2, 1D g) from Ozone Promoted by norganic Salts;
Mh. Chem., 133, 387-391 (2003)

Heinz Falk (Coeditor)
Progress in the Chemistry of Organic Natural Products Vol. 85, 1-257 (2003)

Heinz Falk (Coeditor)
Progress in the Chemistry of Organic Natural Products Vol. 86, 1-222 (2003)

M. Deak and H. Falk
On the Chemistry of the Resveratrol Diastereomers;
Mh. Chem., 134, 883-888 (2003)

T.A. Salama, B. Lackner and H. Falk
An Efficient Synthesis of O-Methyl Protected Emodin Aldehyde and Emodin Nitrile;
Mh. Chem., 134, 113-119 (2003)

Bettina Schwarzinger and Heinz Falk
A Unique Photoreaction of Hypercinate Bound to Human Serum Albumin, Lipids, or Vesicles;
Mh. Chem., 134, 1353-1358 (2003)

Beate Hager, Mario Alva-Astudillo and Heinz Falk
A Hemin-Analogous Corrphycene Derivative: Suppression of Heme Oxygenase and Reconstitution with Apomyoglobin;
Mh. Chem., 134, 1499-1507 (2003)

Heinz Falk (Coeditor)
Progress in the Chemistry of Organic Natural Products Vol. 87, 1-262 (2004)

T.A. Salama, B. Lackner and H. Falk
Synthesis of 6-Heterocyclically Appended Tri-O-Methyl Protected 6-Desmethyl Emodin Derivatives;
Mh. Chem., 135, 735-742 (2004)

Bernd Lackner, Christoph Etzlstorfer and Heinz Falk
Synthesis and Properties of 10,11-Dibenzimidazolyl-10,11-didesmethylhypericin - The First Heterocyclically Substituted Hypericin Derivative
Mh. Chem., 135, 1157-1166 (2004)

Thorsten Ganglberger, Walther G. Jary, Peter Pöchlauer, Jean-Marie Aubry, Veronique Nardello, and Heinz Falk
A Chemical (Dark) Source of Singlet Oxygen; Ozone Splitting Promoted by Tin(II) Salts;
Mh. Chem., 135, 501-507 (2004)

Bettina Schwarzinger, Heinz Falk
Concerning the Photodiastereomerization and Protic Equilibria of Urocanic Acid and its Complex with Human Serum Albumin
Mh. Chem. 135, 1297-1304 (2004)

W. G. Jary, T. Ganglberger, P. Pöchlauer, and Heinz Falk
Generation of Singlet Oxygen from Ozone Catalyzed by Phosphinoferrocenes.
Monatsh. Chem. 136 (2005) 537-541.

Mario Waser and Heinz Falk
Intramolecularly Friedel-Crafts Acylated Emodin Derivatives. An Access to the Cores of Angucyclinones, Anthracyclinones, and to Hypericin Analogues
Monatshefte für Chemie 136, 609-618 (2005)

Bernd Lackner, Yulita Popova, Christoph Etzlstorfer, Andrija A. Smelcerovic, Christian Klampfl, and Heinz Falk
Synthesis and Properties of Two Heterocyclically Substituted Hypericin Derivatives: 10,11-Dibenzothiazolyl-10,11-didesmethylhypericin and 10,11-Dibenzoxazolyl- 10,11-didesmethylhypericin
Mh. Chem. 136, 777-793 (2005)

Mario Waser, Bernd Lackner, Joachim Zuschrader, Norbert Müller, and Heinz Falk
An efficient regioselective synthesis of endocrocin and structural related natural anthraquinones starting from emodin (2005)
Tetrahedron Letters 46, 2377-2380

Mario Waser, Yulita Popova, Christoph Etzlstorfer, Werner Huber, and Heinz Falk
Syntheses, Photochemical Properties, and Tautomerism of Intramolecularly Friedel-Crafts Acylated Hypericin Derivatives
Mh. Chem. 136, 1221-1231 (2005)

Mario Waser, Walther G. Jary, Peter Pöchlauer, and Heinz Falk
Concerning Chemistry, Reactivity, and Mechanism of Transition Metal Catalysed Oxidation of Benzylic Compounds by Means of Ozone
Journal of Molecular Catalysis A - Chemical, 236, 187-193 (2005)

M. Waser, B. Lackner, and Heinz Falk
Towards second generation Hypericin based Photosensitizers.
Abstr. 10th World Congress of the International Photodynamic Association, Munich, June 2005, p. 70.

M. Waser, B. Lackner, Y. Popova, and Heinz Falk
Syntheses, Properties, and Comparison of 9,12- and 10,11-dibenzothaizolyl substituted Hypericin Derivatives.
Abstracts ESOC14, Helsinki, July 2005, p. 224.

W. Jary, D. Geisslmeir, and Heinz Falk
Verfahren zur Herstellung von Aldehyden aus alkoholen durch Cu-katalysierte Oxidation.
Österr. Pat. AT 838/2005.

W. Jary, B. de Lange, R. Broxterman, M. van der Sluis, P. Uiterweerd, P. Pöchlauer, G. Zuckerstätter, and Heinz Falk
Verbessertes Verfahren zur Herstellung von chiralen oder enantiomerenangereicherten beta-Aminosäuren, -aldehyden, -ketonen und beta- oder gamma-aminoalkoholen.
Österr. Pat. AT 929/2004; PCT (Weltpatent): WO 2005/063682 A1.

David Geisslmeir, Walther G. Jary, and Heinz Falk
The TEMPO/Copper Catalyzed Oxidation of Primary Alcohols to Aldehydes Using Oxygen as Stoichiometric Oxidant
Mh. Chem., 136, 1591-1599 (2005)

Bernd Lackner, Klaus Bretterbauer, and Heinz Falk
An Efficient Route to Emodic Amine and Analogous O-Methyl Protected Derivates Starting from Emodin
Mh. Chem., 136, 1629-1639 (2005)

M. Waser, J. Zuschrader, and Heinz Falk
Marschalk Type Reactions in the Synthesis of Potentially Photodynamically Active Hypericin Derivatives.
Abstr. 11. Österr. Chemietage 2005, Leoben, PO-45.

Bernd Lackner, Klaus Bretterbauer, Clemens Schwarzinger, and Heinz Falk
A Route to Amino Functionalized Hypericin Derivatives and their Chemical and Photochemical Properties Pertaining to Photodynamic Therapy.
Mh. Chem., 136, 2067-2082 (2005)

Klaus Wolkenstein, Jürgen H. Gross, Heinz Falk, and Heinz F. Schöler
Preservation of hypericin and related polycyclic quinone pigments in fossil crinoids.
Proceedings of the Royal Society B, 273, 451-456 (2006)

Beate Hager, Bettina Schwarzinger and Heinz Falk
Concerning the Thermal Diastereomerization of the Green Fluorescent Protein Chromophore.
Mh. Chem., 137, 163-168 (2006)

Mario Waser and Heinz Falk
Condensed Emodin Derivatives and Their Applicability for the Synthesis of a Fused Heterocyclic Hypericin Derivative
Eur. J. Org. Chem., 1200-1206 (2006)

Mario Waser and Heinz Falk
Towards Second Generation Hypericin Based Photosensitizers for Photodynamic Therapy
Curr. Org. Chem. 11: 547-558 (2007)

Heinz Falk
Karl Schlögl. Obituary
Mh. Chem., 138 (2007)

Karoline Fendler, Beate Hager, and Heinz Falk
The Thermal Diastereomerization of the Tryptophane-Derived Green Fluorescent Protein Chromophore
Mh. Chem., 138, 859-862 (2007)

Heinz Falk
Progress in the Chemistry of Organic Natural Products 88
Springer Wien / New York (2007)

Mieke Roelants, Heinz Falk, Bernd Lackner, Mario Waser, Peter A.M. de Witte
OC222 Bathochromically shifted hypericin derivatives: photosensitizing properties.
Abstr. of 12th Congress of the Europaean Society for Photobiology 2007, University of Bath, UK, Sept 1/6, (2007)

Heinz Falk
Die 44. Mineralientage München - ein Rückblick
Fossilien, 25, 2-4 (2008)

Heinz Falk
Karl Schlögl, Nachruf
Almanach d. Öst. Akademie der Wiss. , 157, 469-477 (2008)

Stefan Aigner, and Heinz Falk
A microwave-assisted synthesis of phenanthroperylene quinones as exemplified with hypericin
Mh. Chem., 139, 991-993 (2008)

Joachim Zuschrader, Gerald Reiter, Heinz Falk
ω,ω′ Urea- and dithioacetal-derivatives of hypericin
Monatsh. Chem. 139 (2008) 995-998

David Geisslmeir, Heinz Falk
ω,ω′ Appended nucleo-base derivatives of hypericin
Monatsh. Chem. 139 (2008) 1127-1136

Joachim Zuschrader, Wolfgang Schöfberger, and Heinz Falk
A carbohydrate-linked hypericinic photosensitizing agent
Mh. Chem., 139, 1387-1390 (2008)

Heinz Falk
Progress in the Chemistry of Organic Natural Products 89
Springer Wien / New York (2008)

Stefan Aigner, Heinz Falk
On synthesis and properties of hypericin-porphyrin hybrids
Monatsh. Chem. 139 (2008) 1513-1518

Heinz Falk
Monatshefte für Chemie / Chemical Monthly 139
Springer Wien / New York (2008)

Heinz Falk
Progress in the Chemistry of Organic Natural Products 90
Springer Wien / New York (2008)

Mieke Roelants, Bernd Lackner, Mario Waser, Heinz Falk, Patrizia Agostinis, Hendrik Van Poppel and Peter A. M. de Witte
In vitro study of the photocytotoxicity of bathochromically-shifted hypericin derivatives
Photochem. Photobiol. Sci. 8 (2009) 822-829

Institute of Organic Chemistry