Homoisoflavonoids and Related Compounds. V. A Novel Dibenzoxocin Derivative from Caesalpinia sappan L.

MICHIO NAMIKOSHI; HIROYUKI NAKATA; TAMOTSU SAITOH

doi:10.1248/cpb.35.3615

Homoisoflavonoids and Related Compounds. V. A Novel Dibenzoxocin Derivative from Caesalpinia sappan L.

MICHIO NAMIKOSHI, HIROYUKI NAKATA, TAMOTSU SAITOH

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Keywords: Caesalpinia sappan, Sappan Lignum, Leguminosae, heartwood, dibenzoxocin derivative, 10-O-methylprotosappanin B, ¹H-¹H difference NOE spectrum

JOURNAL FREE ACCESS

1987 Volume 35 Issue 9 Pages 3615-3619

DOI https://doi.org/10.1248/cpb.35.3615

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Abstract

A novel dibenzoxocin derivative, 7, 8-dihydro-10-methoxy-3, 7, 11-trihydroxy-6H-dibenz [b, d] -oxocin-7-methanol was isolated from Sappan Lignum, the dried heartwood of Caesalpinia sappan L. The chemical structure was established on the basis of the spectrometric data and the chemical interrelation with protosappanin B (7, 8-dihydro-3, 7, 10, 11-tetrahydroxy-6H-dibenz [b, d] oxocin-7-methanol).

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