Facile syntheses of 3 ',4 '-methylenedioxy-2 '',2 ''-dimethylpyrano-[5 '',6 '': 7,8]-flavone and (+/-)-ponganone III, two pyranoflavanoids

Authors
Tan, WF Li, WDZ Huang, CS Li, YL Xing, YC
Citation
Wf. Tan et al., Facile syntheses of 3 ',4 '-methylenedioxy-2 '',2 ''-dimethylpyrano-[5 '',6 '': 7,8]-flavone and (+/-)-ponganone III, two pyranoflavanoids, SYN COMMUN, 29(19), 1999, pp. 3369-3377
Citations number
13
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
SYNTHETIC COMMUNICATIONS
ISSN journal
00397911 → ACNP
Volume
29
Issue
19
Year of publication
1999
Pages
3369 - 3377
Database
ISI
SICI code
0039-7911(1999)29:19<3369:FSO3''>2.0.ZU;2-H
Abstract
Facile syntheses of two naturally occurring pyranoflavanoids, 3',4'-methyle nedioxy-2",2"-dimethylpyrano-[5",6":7,8]-flavone (1) and (+/-)-ponganone II I (2), have been achieved through the key intermediate chromene 6 by a DDQ- induced oxidative cyclization.