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Two New Sesquiterpene Polyol Esters from Celastrus angulatus
Author(s) -
Wei ShaoPeng,
Wu WenJun,
Ji ZhiQin,
Zhang JiWen,
Guo YongZe,
Xue Jian
Publication year - 2010
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.200900473
Subject(s) - chemistry , sesquiterpene , polyol , stereochemistry , two dimensional nuclear magnetic resonance spectroscopy , organic chemistry , polyurethane
Two novel sesquiterpene polyol esters with a dihydro‐ β ‐agarofuran (=(3 R ,5a S ,9 R ,9a S )‐octahydro‐2,2,5a,9‐tetramethyl‐2 H ‐3,9a‐methano‐1‐benzoxepin) skeleton, (1 α ,2 α ,4 β ,8 α ,9 α )‐1,2,8,12‐tetrakis(acetyloxy)‐9‐(furoyloxy)‐4‐hydroxydihydro‐ β ‐agarofuran ( 1 ) and (1 α ,2 α ,6 β ,8 α ,9 α )‐1,2,6,8,12‐pentakis(acetyloxy)‐9‐(benzoyloxy)dihydro‐ β ‐agarofuran ( 2 ), and the three known compounds (1 α ,2 α ,4 β ,6 β ,8 α ,9 β )‐1,2,6‐tris(acetyloxy)‐9‐(benzoyloxy)‐4‐hydroxy‐8,12‐bis(isobutyryloxy)dihydro‐ β ‐agarofuran ( 3 ), (1 α , 2 α ,4 β ,6 β ,8 α ,9 β )‐1,2,6,8‐tetrakis(acetyloxy)‐9‐(furoyloxy)‐4‐hydroxy‐12‐isobutyryloxy)dihydro‐ β ‐agarofuran ( 4 ), and (1 α ,2 α ,4 β ,6 β ,8 α ,9 β )‐1,2,6‐tris(acetyloxy)‐9‐(benzoyloxy)‐4‐hydroxy‐8‐(isobutyryloxy)‐12‐[(2‐methylbutanoyl)oxy]dihydro‐ β ‐agarofuran ( 5 ) were isolated from the root bark of Celastrus angulatus. Their chemical structures were elucidated by analyses of their MS and NMR data.