Two new xanthones from the stems of Cratoxylum cochinchinense.
Two new xanthones, 6-hydroxy-3,7-dimethoxy-8-(3-methylbut-2-enyl)-6',6'-dimethyl-5'-hydroxy-4',5'-dihydropyrano(2',3':1,2)xanthone (1) and 6-hydroxy-3,7-dimethoxy-8-(2-oxo-3-methylbut-3-enyl)-6',6'-dimethyl-5'-hydroxy-4',5'-dihydropyrano(2',3':1,2)xanthone (2), have been isolated from the stems of Cratoxylum cochinchinense (Lour.) Blume. Their structures were established on the basis of spectroscopic analysis.
College of Traditional Chinese Medicine, Shenyang Pharmaceutical University, Shenyang, China.
San-Lin
SL
Jin
Nai-Li
NL
Wang
Xue
X
Zhang
Yi
Y
Dai
Xin-Sheng
XS
Yao
D028084:Clusiaceae / Q000737:chemistry*; D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification*; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D018547:Plant Stems / Q000737:chemistry; D044004:Xanthones / Q000737:chemistry / Q000302:isolation & purification*
C540978:6-hydroxy-3,7-dimethoxy-8-(2-oxo-3-methylbut-3-enyl)-60,60-dimethyl-50-hydroxy-40,50-dihydropyrano(20,30:1,2)xanthone; C540979:6-hydroxy-3,7-dimethoxy-8-(3-methylbut-2-enyl)-60,60-dimethyl-50- hydroxy-40,50-dihydropyrano(20,30:1,2)xanthone; D004365:Drugs, Chinese Herbal; D044004:Xanthones