Alexander Hillisch

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The distinct roles of the two estrogen receptor (ER) isotypes, ER␣ and ER␤, in mediating the physiological responses to estrogens are not completely understood. Although knockout animal experiments have been aiding to gain insight into estrogen signal-ing, additional information on the function of ER␣ and ER␤ will be provided by the application of(More)
Drug-like and lead-like hits derived from HTS campaigns provide good starting points for lead optimization. However, too strong emphasis on potency as hit-selection parameter might hamper the success of such projects. A detailed absorption, distribution, metabolism, excretion and toxicology (ADME-Tox) profiling is needed to help identify hits with a minimum(More)
Protein structure-based drug design has been contributing to the drug discovery process since the early 1990s. Structural knowledge on the exact interactions of drugs with their target proteins has been applied mainly to predict potency changes of chemically modified lead compounds. With the 3D-structural information available today, additional aspects of(More)
Progesterone is more than a progestin. Beyond functions in cycle and pregnancy, progesterone binds with high affinity to the mineralocorticoid receptor (MR) acting as an antagonist, with obvious significance for electrolyte homeostasis, an array of MR-related functions in the circulation as well as in the CNS. Progesterone induces natriuresis at(More)
  • Alexander Hillisch, Johannes von Langen, Bernd Menzenbach, Peter Droescher, Günter Kaufmann, Birgitt Schneider +1 other
  • 2003
Polar functional groups in the A- and D-ring (positions 3 and 17beta or 20) are common to all natural and synthetic steroid hormones. It was assumed that these pharmacophoric groups are involved in strong hydrogen bonding interactions with the respective steroid receptors. High resolution X-ray structures of the estrogen and androgen receptors have(More)
In search for new inhibitors of human 17beta-hydroxysteroid dehydrogenase type 1 (h17beta-HSD1) a specific group of steroids with interesting properties including novel compounds was investigated. Several estratriene derivatives with fluorine-substitution in position 17 of the steroidal scaffold were synthesised and tested in vitro towards recombinant(More)
In a unique collaboration between a software company and a pharmaceutical company, we were able to develop a new in silico pKa prediction tool with outstanding prediction quality. An existing pKa prediction method from Simulations Plus based on artificial neural network ensembles (ANNE), microstates analysis, and literature data was retrained with a large(More)
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