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Isotope Dilution Analysis of the Major Prenylated Flavonoids Found in Beer

Buckett, L.; Schinko, S.; Urmann, C.; Riepl, H.; Rychlik, M. (2022)

Frontiers in nutrition 7, 619921.
DOI: 10.3389/fnut.2020.619921

Open Access

Semi-Synthetic Approach Leading to 8-Prenylnaringenin and 6-Prenylnaringenin: optimization of the Microwave-Assisted Demethylation of Xantohumol Using Design of Experiments

Urmann, C.; Riepl, H. (2020)

Molecules 25, 4007 (17).
DOI: 10.3390/molecules25174007

Open Access

Where Is Bacosine in Commercially Available Bacopa monnieri?

Ritter, S.; Urmann, C.; Herzog, R.; Glaser, J.; Bieringer, S.; Geisberger, T....

Planta Medica 86 (8), S. 565-570.
DOI: 10.1055/a-1137-4289


The Prenylflavonoid ENDF1 Overrules Central Nervous System Growth Inhibitors and Facilitates Regeneration of DRG Neurons

Bieler, L.; Vogl, M.; Kirchinger, M.; Urmann, C.; Riepl, H.; Bandtlow, C....

Frontiers in Cellular Neuroscience 13, 332.
DOI: 10.3389/fncel.2019.00332

Open Access

Synthesis of Ether-Diols with Low Polarity from Long-Chained Fatty Alcohols for Use in Block Copolymers

Huber, V.; Riepl, H. (2019)

Journal of the American Oil Chemists' Society 96 (4), S. 433-442.
DOI: 10.1002/aocs.12197


6- and 8-Prenylnaringenin, Novel Natural Histone Deacetylase Inhibitors Found in Hops, Exert Antitumor Activity on Melanoma Cells

Venturelli, S.; Niessner , H.; Sinnberg, T.; Berger, A.; Burkard, M.; Urmann, C....

Cellular Physiology and Biochemistry 51 (2), S. 543-556.
DOI: 10.1159/000495275

Open Access

Synthesis of Terpene Diamines Based on Camphor-Derived Dinitriles

Kinzl, F.; Riepl, H. (2015)

Helvetica Chimica Acta 98 (4), S. 447-452.
DOI: 10.1002/hlca.201400346


Neurodifferentiating potential of 8-prenylnaringenin and related compounds in neural precursor cells and correlation with estrogen-like activity

Urmann, C.; Oberbauer, E.; Couillard-Després, S.; Aigner, L.; Riepl, H. (2015)

Planta Medica 81 (4), S. 305-311.
DOI: 10.1055/s-0034-1396243


Central composite design for optimal technology of concentrating vanillic acid using foam fractionation

Firlbeck, D.; Faulstich, M.; Urmann, C.; Azaizeh, H.; Tafesh, A.; Riepl, H. (2013)

Separation and Purification Technology 119, S. 28-34.
DOI: 10.1016/j.seppur.2013.08.033


Iridium-catalysed isomerising trialkylsilylation of methyl oleate

Huber, T.; Firlbeck, D.; Riepl, H. (2013)

Journal of Organometallic Chemistry 744, S. 144-148.
DOI: 10.1016/j.jorganchem.2013.06.002


Chroman-like cyclic prenylflavonoids promote neuronal differentiation and neurite outgrowth and are neuroprotective

Oberbauer, E.; Urmann, C.; Steffenhagen, C.; Bieler, L.; Brunner, D.; Furtner, T....

Journal of Nutritional Biochemistry 24 (11), S. 1953-1962.
DOI: 10.1016/j.jnutbio.2013.06.005


Improved Synthesis of Indirubin Derivatives by Sequential Build-Up of the Indoxyl Unit: First Preparation of Fluorescent Indirubins

Riepl, H.; Urmann, C. (2012)

Helvetica Chimica Acta 95 (8), S. 1461-1477.
DOI: 10.1002/hlca.201200042


Refining process for separation of prenylated polyphenols

Riepl, H.; Urmann, C. (2012)

DE 102012105613 A1.

Chromane-like cyclic prenylflavonoids for the medical intervention in neurological disorders

Aigner, L.; Oberbauer, E.; Couillard-Després, S.; Rivera, F.; Riepl, H.; Urmann, C....


Self Metathesis of Fatty Alcohols and Amines to Provide Monomers for Polyester and Polyamide Products

Riepl, H.; Pettrak, J.; Faulstich, M.; Herrmann, W. (2010)

Macromolecular Symposia 293 (1), S. 39-42.
DOI: 10.1002/masy.200900041


Chapter 71: Desmethylxanthohumol from Hops, Chemistry and Biological Effects

Diller, R.; Riepl, H.; Rose, O.; Frias, C.; Henze, G.; Prokop, A. (2009)

Beer in Health and Disease Prevention, S. 703-709.
DOI: 10.1016/B978-0-12-373891-2.00071-7


Synthesis of 5,7-Dihydrodibenzo[b,f][1,7]naphthyridine-6,12-dione, an Unexpected Isolate from Isatis tintoria

Riepl, H.; Kellermann, M. (2009)

Helvetica Chimica Acta 92 (4), S. 668-676.
DOI: 10.1002/hlca.200800337


Desmethylxanthohumol from hops, chemistry and biological effects

Diller, R.; Riepl, H.; Rose, O.; Frias, C.; Henze, G.; Prokop, A. (2008)

Enzylopaedic Handbook of Hop and Beer.

A Synthetic Analogue of the Indigo Jeans Dye Tryptanthrin, NT1, Induces Apoptosis in Vitro, Ex Vivo and in Vivo in CD95-Dependent Manner in Pediatric Leukemia and Lymphoma Cells Sensitizing Malignant Cells to Cytostatic Drugs Via Downregulation of XIAP

Jesse, P.; Riepl, H.; Wieder, T.; Henze, G.; Prokop, A. (2008)

Blood (American Society of Hematology) 112 (11), S. 2630.
DOI: 10.1182/blood.V112.11.2630.2630


Super absorbers from renewable feedstock by catalytic oxidation

Herrmann, W.; Rost, A.; Tosh, E.; Riepl, H.; Kühn, F. (2008)

Green Chemistry 10 (4), S. 442-446.
DOI: 10.1039/B717134J


Prof. Dr. Herbert Riepl

Hochschule Weihenstephan-Triesdorf

Fakultät Umweltingenieurwesen
Markgrafenstraße 16
91746 Weidenbach

T +49 9421 187-302