REVISED 13C-NMR ASSIGNMENTS OF KAURENOIDS FROM WEDELIA PROSTRATA HOOK et ARN (HEMSL)

Document Type : Original Article

Authors

1 Department of Pharmacognosy, Faculty of Pharmacy, Assiut University, 71524 Assiut, Egypt

2 Faculty of Pharmacy, Meijo University, Tempaku, Nagoya, Japan

Abstract

A sesquiterpene and nine known ent kaurenoids in addition to two flavonoids were isolated from Wedelia prostrate (Compositae) cultivated in Egypt for the first time. Their structures were elucidated on the basis of spectroscopic methods. The HH-COSY, CH-COSY, COLOC and/or HMBC studies led to revisement of the previously reported 13C-NMR resonances of some of them.