Total syntheses of the monoterpene indole alkaloids (±)-alstilobanine A and E and (±)-angustilodine.

Total syntheses of the monoterpene indole alkaloids (±)-alstilobanine A and E and (±)-angustilodine.
复制标题

DOI:
10.1021/jo402495q
复制
发表时间:
2014-01-03
期刊:
The Journal of organic chemistry
影响因子:
--
通讯作者:
Weinreb SM
Weinreb SM
中科院分区:
其他
文献类型:
--
作者:
Feng Y;Majireck MM;Weinreb SM

文献摘要

参考文献

被引文献

相似文献

已开发出一种合成策略,最终实现了小类不寻常单萜吲哚生物碱的立体选择性全合成,例如阿斯蒂洛班宁 A (3) 和 E (2) 以及安古斯蒂洛定 (1)。关键步骤包括吲哚酯二价阴离子与哌啶衍生的亚硝基烯烃的新型分子间迈克尔型加成,形成生物碱的 C15、C16 键。此外,应用Romo方案来实现立体选择性分子内亲核试剂辅助的羟醛内酯化,从而产生掺入必需的顺式融合2-氮杂萘烷部分的β-内酯,并设定代谢物的C15、C19、C20相对立体化学。然后可以立体选择性地进行衍生自该吲哚酯β-内酯中间体的二价阴离子与甲醛的醛醇缩合,以引入必需的C16羟甲基基团。对该系统的进一步操作最终产生了外消旋形式的三种生物碱。
A synthetic strategy has been developed culminating in stereoselective total syntheses of the small class of unusual monoterpenoid indole alkaloids exemplified by alstilobanine A (3) and E (2) and angustilodine (1). A pivotal step includes a novel intermolecular Michael-type addition of an indole ester dianion to a piperidine-derived nitrosoalkene to form the C15, C16 bond of the alkaloids. In addition, an application of the Romo protocol for effecting a stereoselective intramolecular nucleophile-assisted aldol-lactonization was employed, leading to a β-lactone incorporating the requisite cis-fused 2-azadecalin moiety and also setting the C15, C19, C20 relative stereochemistry of the metabolites. It was then possible to stereoselectively effect an aldolization of a dianion derived from this indole ester β-lactone intermediate with formaldehyde to introduce the requisite C16 hydroxymethyl group. Further manipulations of the system ultimately led to the three alkaloids in racemic form.
DOI: 10.1039/a904402g
发表时间: 1999-10-01
期刊: JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2
影响因子: --
作者:
Bassindale, AR;Borbaruah, M;Taylor, PG
通讯作者: Taylor, PG
DOI: 10.1021/ja00165a034
发表时间: 1990-04-25
影响因子: 15
作者:
DENMARK, SE;DAPPEN, MS;JACOBS, RT
通讯作者: JACOBS, RT
DOI: 10.1021/ol061816t
发表时间: 2006-09-14
期刊: ORGANIC LETTERS
影响因子: 5.2
作者:
Henry-Riyad, Huda;Lee, Changsuk;Romo, Daniel
通讯作者: Romo, Daniel
DOI: 10.1016/j.bmcl.2005.12.069
发表时间: 2006-04-01
影响因子: 2.7
作者:
Huscroft, IT;Carlson, EJ;Kulagowski, JJ
通讯作者: Kulagowski, JJ
DOI: 10.3987/com-11-s(p)23
发表时间: 2012-01-01
期刊: HETEROCYCLES
影响因子: 0.6
作者:
Chauhan, Pradeep S.;Majireck, Max M.;Weinreb, Steven M.
通讯作者: Weinreb, Steven M.