Total Syntheses of Scaparvins B, C, and D Enabled by a Key C–H Functionalization
作者:Qinda Ye、Pei Qu、Scott A. Snyder
DOI:10.1021/jacs.7b06185
日期:2017.12.27
possesses an impressive range of bioactivities and high synthetic challenge due to their unique amalgamation of rings, stereocenters, and oxygenation. Herein, we disclose the first totalsyntheses of three members, scaparvins B, C, and D, through a route fueled by several chemoselective and carefully orchestrated steps. One such operation is a tailored late-stage C-H functionalization converting a carboxylic
由于环、立体中心和氧合的独特融合,克莱罗丹二萜家族具有一系列令人印象深刻的生物活性和高合成挑战。在这里,我们公开了三个成员,scaparvins B、C 和 D 的第一次全合成,通过几个化学选择性和精心策划的步骤推动的路线。一种这样的操作是在最小化烯烃环氧化的条件下通过叔CH键的氧化将羧酸转化为内酯的定制后期CH官能化。这一步提供了完成目标的关键功能。此外,使用适当的手性催化剂与拉瓦尔二烯使序列具有对映选择性。
Highly Enantioselective Diels−Alder Reactions of 1-Amino-3-siloxy-dienes Catalyzed by Cr(III)-Salen Complexes
作者:Yong Huang、Tetsuo Iwama、Viresh H. Rawal
DOI:10.1021/ja002058j
日期:2000.8.1
Total Synthesis of Platencin
作者:K. C. Nicolaou、G. Scott Tria、David J. Edmonds
DOI:10.1002/anie.200800066
日期:2008.2.15
Enantioselective Total Synthesis of (+)-KB343
作者:Cheng Bi、Yu Wang、Chi He、Phil S. Baran
DOI:10.1021/jacs.3c01991
日期:——
A concise totalsynthesis of the complex guanidinium toxin KB343 is reported traversing through an unusual sequence of chemoselective transformations and strategic skeletal reorganization. The absolute configuration is confirmed through an enantioselective route, and the structures of all key intermediates and the natural product itself are unassailably confirmed through X-ray crystallographic analysis