New synthesis of a selective estrogen receptor modulator using an enatioselective phosphine-mediated 2+3 cycloaddition
作者:Debra J. Wallace、Robert A. Reamer
DOI:10.1016/j.tetlet.2013.06.023
日期:2013.8
A new synthetic approach to the selective estrogen agonist 1 is described. The key steps in the route are a phosphine catalyzed 2+3cycloaddition between an indanone enone and allenyl methyl ketone, and an unusual Robinson annulation to afford a bicylco[3.2.1]octane. The potential benefits of the new route are discussed along with efforts to render the approach asymmetric.
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.
[EN] PREPARATION OF SUBSTITUTED 2-HYDROXYGIBBA-1(10A), 2, 4, 4B-TETRAEN-6-ONES<br/>[FR] PRÉPARATION DE 2-HYDROXYGIBBA-1(10A), 2, 4, 4B-TÉTRAEN-6-ONES SUBSTITUÉES
申请人:MERCK & CO INC
公开号:WO2007081895A2
公开(公告)日:2007-07-19
[EN] The instant invention describes processes for synthesizing substituted 2-hydroxygibba-1(10a),2,4,4b-tetraen-6-ones. [FR] L'invention concerne des procédés de synthèse de 2-hydroxygibba-1(10a),2,4,4b-tétraen-6-ones substituées.