New sesquiterpenoids of Bombax malabaricum |
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Authors: | Akella VB Sankaram Narreddi Sivasankara Reddy James N Shoolery |
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Institution: | 1. NMR Application Laboratory, Palo Alto, CA 94303, U.S.A. |
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Abstract: | Hemigossypol-6-methyl ether, reported to be present in the root bark of Bombax malabaricum, has been shown to be isohemigossypol-1-methyl ether. Isohemigossypol-1,2-dimethyl ether, 8-formyl-7-hydroxy-5-isopropyl-2-methoxy-3-methyl-1,4-naphthaquinone, 7-hydroxycadalene and an unidentified phenolic compound have also been isolated. Long range couplings in the 1H NMR spectrum of isohemigossypol-1-methyl ether have been established by decoupling experiments. |
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Keywords: | Bombacaceae new isohemigossypol derivatives |
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