Structures of cadinane- and guaiane-type sesquiterpenoids from Enterospermum madagascariensis (Baill.) Homolle.
Three new cadinane- and guaiane-type sesquiterpenoids, 2-hydroxy-10-epi-zonarene 1, 2, 15-dihydroxycalamenene 2 and guaia-4, 6-dien-3-one 3, were isolated from the wood of Enterospermum madagascariensis (Rubiaceae) grown in Madagascar. Their structures were established from concerted application of 2D NMR techniques including gs-COSY, gs-HMQC, gs-HMBC and NOESY.
Raharivelomanana
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Laboratoire de Chimie des Substances Naturelles, Université de la Polynésie Française, BP 6570, 98702 Faaa, Tahiti, Polynésie Française, France.
Bianchini
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JP
Ramanoelina
A R P
AR
Rasoharahona
J R E
JR
Chatel
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Faure
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D003508:Cycloheptanes / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D000081223:Polycyclic Sesquiterpenes; D019666:Rubiaceae / Q000737:chemistry*; D012717:Sesquiterpenes / Q000737:chemistry*; D045789:Sesquiterpenes, Guaiane / Q000737:chemistry*
D003508:Cycloheptanes; D000081223:Polycyclic Sesquiterpenes; D012717:Sesquiterpenes; D045789:Sesquiterpenes, Guaiane; C508039:cadinane; C421026:guaiane