Total Synthesis of (±)-Glyceollin II and a Dihydro Derivative
作者:Neha Malik、Zhaoqi Zhang、Paul Erhardt
DOI:10.1021/acs.jnatprod.5b00607
日期:2015.12.24
Stressed soybeans produce a group of phytoalexins that belong to the 6a-hydroxypterocarpan family of flavonoids. Certain of the more prominent members, such as the glyceollins I, II, and III, have demonstrated potential antidiabetic properties and promising cytotoxicity in both human breast and prostate cancer cellcultures with preliminary studies in animals further demonstrating antitumor effects
Synthesis of 6a-hydroxypterocarpans via intramolecular benzoin condensation
作者:Neha Malik、Paul Erhardt
DOI:10.1016/j.tetlet.2013.05.121
日期:2013.7
A novel approach for the syntheses of 6a-hydroxypterocarpans is reported. Its practicality is demonstrated by the synthesis of (±)-glycinol. The main feature is an intramolecular benzoin condensation catalyzed by nucleophilic carbenes to initiate assembly of the benzopyran and establish the 6a-hydroxy center. In addition, a one-pot method was developed to form an epoxide that facilitates subsequent