A series of hydroxamicacid derivatives bearing a cyclic amide/imide group as a linker and/or cap structure, prepared during our structural development studies based on thalidomide, showed class-selective potent histonedeacetylase (HDAC)-inhibitory activity. Structure-activity relationship studies indicated that the steric character of the substituent introduced at the cyclic amide/imide nitrogen
Zirconium Hydroaminoalkylation. An Alternative Disconnection for the Catalytic Synthesis of α-Arylated Primary Amines
作者:Ana Koperniku、Paul J. Foth、Glenn M. Sammis、Laurel L. Schafer
DOI:10.1021/jacs.9b10465
日期:2019.12.4
Primaryamine products have been prepared using zirconium catalyzed hydroaminoalkylation of alkenes with N-silylated benzylamine substrates. Catalysis using commercially available Zr(NMe2)4, affords an alternative disconnection to access α-arylated primaryamines upon aqueous work-up. Substrate dependent regio- and diastereoselectivity of the reaction is observed. Bulky substituents on the terminal
Azasteroid compounds for the treatment of prostatic hypertrophy, their preparation and use
申请人:Sankyo Company Limited
公开号:EP0484094A2
公开(公告)日:1992-05-06
Compounds of formula (I) :
(in which : R1 is a hydrogen atom, an unsubstituted alkyl group, an aryl-substituted alkyl group or a heterocyclic-substituted alkyl group ; R2 is an aryl-substituted alkyl group, a heterocyclic-substituted alkyl group or a diarylamino group ; R3 is a hydrogen atom, an unsubstituted alkyl group, an aryl-substituted alkyl group or an alkenyl group having from 3 to 6 carbon atoms ; and each of the bonds represented by α-β and y-8 is a carbon-carbon single bond or a carbon-carbon double bond ;) and pharmaceutically acceptable salts and esters thereof are useful for the treatment and prophylaxis of prostatic hypertrophy. We also provide processes for their preparation.
Steroid derivatives for the treatment of prostatic hypertrophy, their preparation and uses
申请人:SANKYO COMPANY LIMITED
公开号:EP0567271A2
公开(公告)日:1993-10-27
Compounds of formula (I):
[wherein : R1 is hydrogen, alkyl, aryl-substituted alkyl or aromatic heterocyclic-substituted alkyl ; R2 is: aryl-substituted alkyl, aromatic heterocyclic-substituted alkyl or diarylamino; and R3 is carboxy or a group of formula -CONHS02 R4 wherein R4 is alkyl] ; and pharmaceutically acceptable salts and esters thereof have valuable 5α-reductase inhibitory activity and can thus be used for the treatment and prophylaxis of, inter alia, prostatic hypertrophy as well as other disorders arising from excess levels of 5α-dihydro-testosterone.
Compounds suitable for use as intermediates in the preparation of Androst-3,5-dien-3-carboxy derivatives
申请人:SANKYO COMPANY LIMITED
公开号:EP0725074A2
公开(公告)日:1996-08-07
A compound of formula (IV)
and a process for the preparation of a compound of the following formula:
in which R10 is a hydroxy group, a group -OR5, in which R5 is a carboxy protecting group, a group -NR1R2, in which R1 is hydrogen, alkyl, aryl-substituted alkyl or aromatic heterocyclic-substituted alkyl and R2 is aryl-substituted alkyl, aromatic heterocyclic-substituted alkyl or diarylamino, or a group -NRR', in which R and R' are hydrogen or alkyl.