Total synthesis of lepadiformine alkaloids using N-Boc α-amino nitriles as trianion synthons.
Total synthesis of lepadiformine alkaloids using N-Boc α-amino nitriles as trianion synthons.
复制标题
DOI:
10.1021/jo300161x
复制
发表时间:
2012-04-06
期刊:
影响因子:
--
通讯作者:
Rychnovsky SD
中科院分区:
文献类型:
--
作者:
Perry MA;Morin MD;Slafer BW;Rychnovsky SD
Lepadiformine A, B and C were synthesized in enantiomerically pure form using a reductive cyclization strategy. N-Boc α-amino nitriles were deprotonated and alkylated with enantiomerically pure dibromides to afford the first ring. The products were manipulated to introduce phosphate leaving-groups, and subsequent reductive lithiation followed by intramolecular alkylation formed the second ring with high stereoselectivity. The third ring was formed by intramolecular displacement of a mesylate by the deprotected amine. Lepadiformine A and B contain a hydroxymethyl group adjacent to the amine. This appendage was introduced in a sequence using a Polonovski-Potier reaction as the key step. The synthetic strategy is stereoselective and convergent, and demonstrates the utility of N-Boc α-amino nitriles as linchpins for alkaloid synthesis.
登录
查看更多内容
影响因子:
2.8
作者:
François, D;Poupon, E;Husson, HP
通讯作者:
Husson, HP
影响因子:
16.6
作者:
Caldwell, John J.;Craig, Donald
通讯作者:
Craig, Donald
影响因子:
5.2
作者:
Bahde RJ;Rychnovsky SD
通讯作者:
Rychnovsky SD
影响因子:
3.6
作者:
FREEMAN, PK;HUTCHINSON, LL
通讯作者:
HUTCHINSON, LL
DOI:
10.1002/anie.197508011
发表时间:
1975-01-01
期刊:
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION IN ENGLISH
影响因子:
--
作者:
APPEL, R
通讯作者:
APPEL, R