NEOIPECOSIDE AND 7-METHYLNEOIPECOSIDE, NEW UNUSUALLY-CYCLIZED TETRAHYDROISOQUINOLINE-MONOTERPENE GLUCOSIDES FROM CEPHAELIS IPECACUANHA

Atsuko ITOH; Takao TANAHASHI; Naotaka NAGAKURA

doi:10.1248/cpb.37.1137

Atsuko ITOH, Takao TANAHASHI, Naotaka NAGAKURA

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Keywords: Cephaelis ipecacuanha, Rubiaceae, neoipecoside, 7-methylneoipecoside, tetrahydroisoquinoline-monoterpene glucoside, dopamine, secologanin, ipecoside, NOE, CD

JOURNAL FREE ACCESS

1989 Volume 37 Issue 4 Pages 1137-1139

DOI https://doi.org/10.1248/cpb.37.1137

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Abstract

Two new monoterpene glucosides with unusually 7, 8-disubstituted tetrahydroisoquinoline nucleus, neoipecoside and 7-methylneoipecoside, have been isolated from Cephaelis ipecacuanha A. Richard. Their structures were elucidated as 1 and 2 by spectroscopic and chemical means.

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