Steroids and polyketides from Uvaria hamiltonii stem bark.
Two known steroids, stigmasterol and 6b-hydroxystigmasta-4,22-dien-3-one (1) and two unusual polyketides, cis-4-hydroxymellein (2) and trans-4-hydroxymellein (3) were isolated from the stem bark of Uvaria hamiltonii. The structures of the compounds were elucidated independently by high-resolution 2D-NMR techniques and confirmed by comparison with previously reported values.
Asha
Kamrun Nahar
KN
Phytochemical Research Laboratory, Faculty of Pharmacy, University of Dhaka, Dhaka-1000, Bangladesh.
Chowdhury
Rasheduzzaman
R
Hasan
Choudhury M
CM
Rashid
Mohammad A
MA
D001459:Bangladesh; D007194:India; D018942:Macrolides / Q000737:chemistry* / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D024301:Plant Bark / Q000737:chemistry; D010936:Plant Extracts / Q000032:analysis; D013256:Steroids / Q000737:chemistry* / Q000302:isolation & purification; D031046:Uvaria / Q000737:chemistry*
D018942:Macrolides; D010936:Plant Extracts; D013256:Steroids