N-methylwelwitindolinone B isothiocyanate;(2S,3S,4R,6R,8R)-4-chloro-3-ethenyl-2-isothiocyanato-3,7,7,10-tetramethyl-10-azatetracyclo[6.6.1.12,6.011,15]hexadeca-1(15),11,13-triene-9,16-dione
Total Synthesis of (−)-<i>N</i>-Methylwelwitindolinone B Isothiocyanate via a Chlorinative Oxabicycle Ring-Opening Strategy
作者:Nicholas A. Weires、Evan D. Styduhar、Emma L. Baker、Neil K. Garg
DOI:10.1021/ja5087672
日期:2014.10.22
The first total synthesis of N-methylwelwitindolinone B isothiocyanate is reported. The route features several key steps, including a regio- and diastereoselective chlorinative oxabicycle ring-opening reaction to introduce the challenging alkyl chloride motif.
Total Synthesis of (−)‐
<i>N</i>
‐Methylwelwitindolinone B Isothiocyanate
作者:Julius R. Reyes、Jiasu Xu、Kenichi Kobayashi、Vikram Bhat、Viresh H. Rawal
DOI:10.1002/anie.201705322
日期:2017.8.7
The asymmetric synthesis of (−)‐N‐methylwelwitindolinone B isothiocyanate is reported. Critical challenges overcome through these studies include the stereoselective installation of the sterically congested C13 alkyl chloride and control of the wayward reactivity of the indole unit to standard oxidants. A Pt‐catalyzed hydrosilylation helped stymie unwanted rearrangements facilitated by vinyl group