18000-89-0Relevant articles and documents
A- And D-Ring structural modifications of an androsterone derivative inhibiting 17β-hydroxysteroid dehydrogenase type 3: chemical synthesis and structure-activity relationships
Cortés-Benítez, Francisco,Roy, Jenny,Perreault, Martin,Maltais, René,Poirier, Donald
, p. 7070 - 7088 (2019/08/20)
Decreasing the intratumoral androgen biosynthesis by using an inhibitor of 17β-hydroxysteroid dehydrogenase type 3 (17β-HSD3) is a strategy to treat prostate cancer. The androsterone (ADT) derivative 1 (RM-532-105) has shown strong inhibitory activity on 17β-HSD3, but needs to be improved. Herein, we describe the chemical synthesis and characterization of two series of analogues to address the impact of A- and D-ring modifications on 17β-HSD3 inhibitory activity, androgenic effect, and metabolic stability. Structure-activity relationships were generated by adding different groups at C16/C17 (D-ring diversification) or replacing the ADT backbone by a nor-androstane or an estrane backbone (A-ring diversification). D-ring derivatives were less potent inhibitors than lead compound 1, whereas steroidal backbone (A-ring) change led to identifying promising novel estrane derivatives. This culminated with potent 17β-HSD3 inhibitors 23, 27, 31, and 33 (IC50 = 0.10, 0.02, 0.13, and 0.17 μM, respectively), which did not stimulate LAPC-4 cell proliferation and displayed higher plasma concentration in mice than lead compound 1.
Novel steroid inhibitors of glucose 6-phosphate dehydrogenase
Hamilton, Niall M.,Dawson, Martin,Fairweather, Emma E.,Hamilton, Nicola S.,Hitchin, James R.,James, Dominic I.,Jones, Stuart D.,Jordan, Allan M.,Lyons, Amanda J.,Small, Helen F.,Thomson, Graeme J.,Waddell, Ian D.,Ogilvie, Donald J.
, p. 4431 - 4445 (2012/09/11)
Novel derivatives of the steroid DHEA 1, a known uncompetitive inhibitor of G6PD, were designed, synthesized, and tested for their ability to inhibit this dehydrogenase enzyme. Several compounds with approximately 10-fold improved potency in an enzyme assay were identified, and this improved activity translated to efficacy in a cellular assay. The SAR for steroid inhibition of G6PD has been substantially developed; the 3β-alcohol can be replaced with 3β-H-bond donors such as sulfamide, sulfonamide, urea, and carbamate. Improved potency was achieved by replacing the androstane nucleus with a pregnane nucleus, provided a ketone at C-20 is present. For pregnan-20-ones incorporation of a 21-hydroxyl group is often beneficial. The novel compounds generally have good physicochemical properties and satisfactory in vitro DMPK parameters. These derivatives may be useful for examining the role of G6PD inhibition in cells and will assist the future design of more potent steroid inhibitors with potential therapeutic utility.
A novel scalable and stereospecific synthesis of 3α- and 3β-amino-5α-androstan-17-ones and 3α- and 3β-amino- 5α-pregnan-20-ones
Hitchin, James R.,Hamilton, Niall M.,Jordan, Allan M.,Lyons, Amanda J.,Ogilvie, Donald J.
supporting information; experimental part, p. 2868 - 2872 (2012/07/27)
A novel scalable stereoselective synthesis of 3α- and 3β-amino-5α-androstan-17-ones and 3α- and 3β-amino- 5α-pregnan-20-ones has been developed using phthalimide based Mitsunobu chemistry. In all four cases, the products were isolated as single diastereoisomers in high chemical yield and purity without the need for chromatography at any stage in their syntheses.
