of diphenyl prolinol trimethylsilylether, cis-3,4-disubstituted chromanols are obtained in high to excellent yields (81–98%) and stereoselectivities (dr: 86:14 to >99:1, ee 96 to >99%). The corresponding disubstituted chromans are available by dehydroxylation of the domino products in good to excellent yields (58–95%). Furthermore, oxidation of the domino products with pyridinium chlorochromate provided
Sulfur Ylide Initiated [4 + 1]/[4 + 2] Annulation Reactions: A One-Pot Approach to Dibenzofuran Acrylate Derivatives
作者:Jiaan Shao、Wenteng Chen、Zhimin Ying、Shuangrong Liu、Feng Luo、Lili Ou
DOI:10.1021/acs.orglett.9b02260
日期:2019.8.16
A one-pot approach has been developed for the synthesis of polysubstituted dibenzofuran acrylate derivatives from (E)-2-(2-nitrovinyl)phenols, sulfur ylides, and alkynes. This protocol was carried out under mild reaction condition without any precious catalysts in generally moderate to good yields. Additionally, a plausible mechanism for the transformation was proposed.
MODULATORS OF 5-HT RECEPTORS AND METHODS OF USE THEREOF
申请人:Akritopoulou-Zanze Irini
公开号:US20110118231A1
公开(公告)日:2011-05-19
The present application relates to aryl- and heteroaryl-fused decahydropyrroloazepine, octahydrooxepinopyrrole, octahydropyrrolothiazepine dioxide, decahydrocyclohepta[c]pyrrole, and octahydrocyclohepta[c]pyrrole derivatives of formula (I)
wherein R
1
, R
2
, R
3
, R
4
, R
5
, A, Y
1
, Y
2
, and Y
3
are as defined in the specification. The present application also relates to compositions comprising such compounds, processes for making such compounds, and methods of treating disease conditions using such compounds and compositions, and methods for identifying such compounds.