Diastereo- and Enantioselective Synthesis of Nitroso Diels−Alder-Type Bicycloketones Using Dienamine: Mechanistic Insight into Sequential Nitroso Aldol/Michael Reaction and Application for Optically Pure 1-Amino-3,4-diol Synthesis
作者:Norie Momiyama、Yuhei Yamamoto、Hisashi Yamamoto
DOI:10.1021/ja066037m
日期:2007.2.1
This article presents complete diastereo- and highly enantioselective synthesis of nitroso Diels-Alder-type bicycloketones using dienamine. With the hydrogen bonding of two hydroxyls in the bulky binaphthol 1c, high enantioselectivities and complete diastereoselectivity are realized in 2-oxa-3-aza-bicycloketone synthesis. On the other hand, alpha,beta-unsaturated ketone can be employed as diene precursor, utilizing readily available tetrazole catalyst 3b, to provide the 3-oxa-2-aza-bicycloketones in moderate yields with complete enantioselectivities. Investigation into the reaction utilizing 2-morpholino-4,4-diphenylcyclohexadiene 2d clearly indicated that cyclization with the bulky binaphthol 1c is involved in the sequential process, the N-nitroso aldol reaction, followed by Michael addition. In addition, optically pure 1-amino-3,4-diol is synthesized from 2-oxa-3-aza-bicycloketones. Use of p-phenoxynitrosobenzene allows access to protected amino diol via cleavage of the N-Ph bond.
[EN] ALFA-CARBOLINE INHIBITORS OF NPM-ALK, RET, AND BCR-ABL<br/>[FR] INHIBITEURS DE NPM-ALK, RET, ET BCR-ABL À BASE D'ALPHA-CARBOLINE
申请人:UNIV MILANO BICOCCA
公开号:WO2010025872A2
公开(公告)日:2010-03-11
The present invention relates to compounds of formula (I) wherein R1, R2 and R3 are as defined in the description, to their pharmaceutical compositions and use thereof for the treatment of cancer expressing oncogenic ALK protein, particularly anaplastic large cell lymphoma (ALCL), diffuse large B cell lymphoma (DLBCL), inflammatory myofibroblastic tumours (IMT) and non-small cell lung cancer (NSCLC).