Stereoselective Synthesis of (±)-Rocaglaol Analogues
摘要:
[GRAPHICS]An intramolecular hydroxy epoxide opening was used to access the cyclopenta[b]benzofuran ring system of the natural product rocaglaol (2). Our route allowed the stereocontrolled preparation of the rocaglaol derivative (+/-)-(1S*,3S*,3aR*,8bS)-3b. The synthesis of the (+/-)-(3R*)-epimer of 3b was also achieved. Our strategy is well-suited for the production of analogues with variation of the western ring.
Stereoselective Synthesis of (±)-Rocaglaol Analogues
摘要:
[GRAPHICS]An intramolecular hydroxy epoxide opening was used to access the cyclopenta[b]benzofuran ring system of the natural product rocaglaol (2). Our route allowed the stereocontrolled preparation of the rocaglaol derivative (+/-)-(1S*,3S*,3aR*,8bS)-3b. The synthesis of the (+/-)-(3R*)-epimer of 3b was also achieved. Our strategy is well-suited for the production of analogues with variation of the western ring.
Synthesis of 2,3,4-Trisubstituted 2-Cyclopentenones via Sequential Functionalization of 2-Cyclopentenone
作者:Tarak N. Gowala、Pankaj Chaudhari、Jagadish Pabba、Krishna Sawant、Sitaram Pal、Sujit K. Ghorai
DOI:10.1021/acs.joc.1c01039
日期:2021.8.6
4-triarylcyclopent-2-en-1-ones from 2-cyclopentenone via sequential functionalization of a novel 2,4-dibromo-3-(4-methoxyphenyl) cyclopent-2-en-1-one intermediate has been developed. The process provides access to selective arylation at C-4 and C-2 with a broader substrates scope, which includes heteroaryl and alkyl substitution at C-2.