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.
Jin
San-Lin
SL
College of Traditional Chinese Medicine, Shenyang Pharmaceutical University, Shenyang, China.
Wang
Nai-Li
NL
Zhang
Xue
X
Dai
Yi
Y
Yao
Xin-Sheng
XS
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