Diarylheptanoid and other phenolic constituents of Centrolobium species
Keyword(s):
X Ray
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The heartwood of a specimen of Centrolobium tomentosum Benth (Leguminosae) has given (–)-centrolobine (1a), (–)-de-O-methylcentrolobine (1b), (–)-centrolobol (2), piceatannol (3)and the isoflavone formononetin (4). The heartwood of a second Centrolobium species, which could not be identified further at the U.S. Forest Products Laboratory, yielded (+)-centrolobine, (+)-de-O-methylcentrolobine, (+)-centrolobol, formononetin, 4',7-dihydroxyflavanone (5), 3-hydroxy-9-methoxypterocarpan (6) and minor amounts of a new dihydric phenol. This was identified by n.m.r. and X-ray diffraction measurements as 2-(2'-hydroxy-4'-methoxyphenyl)benzofuran-6-ol (8).
1973 ◽
Vol 31
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pp. 132-133
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1974 ◽
Vol 32
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pp. 506-507
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Keyword(s):
1969 ◽
Vol 27
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pp. 338-339