Enantioselective Synthesis of a Highly Substituted Tetrahydrofluorene Derivative as a Potent and Selective Estrogen Receptor Beta Agonist
作者:Matthew L. Maddess、Jeremy P. Scott、Anthony Alorati、Carl Baxter、Nadine Bremeyer、Sarah Brewer、Kevin Campos、Ed Cleator、Alejandro Dieguez-Vazquez、Andrew Gibb、Andrew Gibson、Melissa Howard、Stephen Keen、Artis Klapars、Jaemoon Lee、Jing Li、Joseph Lynch、Peter Mullens、Debra Wallace、Robert Wilson
DOI:10.1021/op5000489
日期:2014.4.18
The development and execution of a practical asymmetric synthesis of the estrogenreceptor beta selectiveagonist (8R,10aS)-6-(trifluoromethyl)-8,9,10,11-tetrahydro-8,10a-methanocyclohepta[1,2]indeno[4,5-d][1,2,3]triazol-7(3H)-one is described. The optimized route features a key chiral auxiliary-mediated dialkylation approach to set the all-carbon quaternary center with exceptional stereocontrol. Overall
雌激素受体β选择性激动剂(8 R,10a S)-6-(三氟甲基)-8,9,10,11-四氢-8,10a-甲亚甲基环庚烷的实用不对称合成[1,2]的开发和执行[1,2]描述了茚并[4,5- d ] [1,2,3]三唑-7(3 H)-one。优化的路线采用了关键的手性辅助介导的二烷基化方法,以使全碳四元中心具有出色的立体控制能力。总体而言,该化学方法已用于通过13个最长的线性步骤以大于99%的ee制备21%的总收率的> 30 kg候选药物。
Development of a Phase Transfer Catalyzed Asymmetric Synthesis for an Estrogen Receptor Beta Selective Agonist
作者:Jeremy P. Scott、Michael S. Ashwood、Karel M. J. Brands、Sarah E. Brewer、Cameron J. Cowden、Ulf-H. Dolling、Khateeta M. Emerson、Andrew D. Gibb、Adrian Goodyear、Steven F. Oliver、Gavin W. Stewart、Debra J. Wallace
DOI:10.1021/op700178q
日期:2008.7.1
A practical asymmetric synthesis of the estrogen receptor beta selective agonist (7β-9aβ)-1,4-dichloro-2-hydroxygibba-1(10a),2,4,4b-tetraen-6-one (1), proceeding by way of six isolated intermediates and without recourse to chromatography, is described. Highlights of the process route developed are two chemoselective chlorinations, a lithiated hydrazone alkylation and an asymmetric Michael addition
Synthesis Of 1,5-Disubstituted-2-Hydroxy-Gibbatetraen-6-Ones
申请人:Wilkening R. Robert
公开号:US20070293706A1
公开(公告)日:2007-12-20
1,5-disubstituted-2-hydroxy-gibbatetraen-6-ones are useful as estrogen receptor modulators and as precursors to estrogen receptor modulators. The current invention provides a method for the synthesis of 1,5-disubstituted-2-hydroxy-gibbatetraen-6-ones from simple indanone starting materials via a Robinson-type annulation followed by an internal alkylation reaction. This invention further describes the novel use of a fluoroethyl substituent as a latent alkylating group for an internal cyclization reaction.