A concise synthesis of (±) and a total synthesis of (+)-epiquinamide
摘要:
A total synthesis of the quinolizidine alkaloid (+)-epiquinamide 1 has been achieved starting from (-)-pipecolinic acid 3. The key step is the highly diastereoselective addition of a TBDMS-protected propargyl alcohol to a chiral aldehyde derived from 3 to give erythro alkynol 19, which is then easily transformed into the desired bicyclic skeleton. (c) 2006 Elsevier Ltd. All rights reserved.
TRICYCLIC FUSED PYRIMIDINE COMPOUNDS AS INHIBITORS OF p97 COMPLEX
申请人:Cleave Biosciences, Inc.
公开号:US20170267679A1
公开(公告)日:2017-09-21
Tricyclic fused pyrimidine compounds having an arylalkyl amine substituent at the P4 position and a substituted 1H-indol-1-yl, 1H-indol-3-yl, indanyl, indazol-1-yl, indazol-3-yl, benzotriazol-1-yl or 1H-benz[d]imidazol-1-yl group at the P2 position well as optional aliphatic, functional and/or aromatic components substituted at other positions of the tricyclic compounds of the invention. These compounds are inhibitors of the AAA proteasome complex containing p97 and are effective medicinal agents for treatment of diseases associated with p97 bioactivity such as cancer.
Transannular Reductive Rearrangement of α-Amino Ketones: Construction of Aza-tricyclic Frameworks of Several Alkaloids
作者:Jian Zhang、Yong-Qiang Wang、Xin-Wei Wang、Wei-Dong Z. Li
DOI:10.1021/jo4007943
日期:2013.6.21
Transannular reductive rearrangement of bridged cyclic α-amino ketones led to the aza-tricyclic frameworks azepinoindole, hydrolulolidine, and hydrojulolidine of the typical alkaloids of Stemona, Aspidosperma, and Lycopodium, respectively. This facile approach demonstrates the potential applicability of the Clemmensen–Clemo–Prelog–Leonard reductive rearrangement of tricyclic α-amino ketones for the