K. Winkelmann

Oxidation products of abietic acid and its methyl ester.

E. Haslinger, J. Heilmann, O. Sticher, 2002, Journal of natural products.

New prenylated bi- and tricyclic phloroglucinol derivatives from Hypericum papuanum.

J. Heilmann, O. Sticher, O. Zerbe, 2001, Journal of natural products.

New phloroglucinol derivatives from Hypericum papuanum.

O Sticher, J. Heilmann, O. Sticher, 2000, Journal of natural products.

Antibacterial and Cytotoxic Activity of Prenylated Bicyclic Acylphloroglucinol Derivatives from Hypericum amblycalyx

J. Heilmann, H. Skaltsa, Z. Kypriotakis, 2003, Zeitschrift fur Naturforschung. C, Journal of biosciences.

Studies on the Antioxidative Activity of Phloroglucinol Derivatives Isolated from Hypericum Species

J. Heilmann, O. Sticher, K. Winkelmann, 2003, Planta medica.

Phytochemical and biological investigations on Hypericum papuanum, emphasizing on structure elucidation of acylphloroglucinol derivatives by NMR spectroscopy

K. Winkelmann, 2001 .

Further Prenylated Bi- and Tricyclic Phloroglucinol Derivatives fromHypericum papuanum

J. Heilmann, O. Sticher, O. Zerbe, 2001 .