Studies on the Constituents of Lonicera Species. XVII. New Iridoid Glycosides of the Stems and Leaves of Lonicera japonica THUNB.

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  • Studies on the Constituents of Lonicera Species. 17. New Iridoid Glycosides of the Stems and Leaves of Lonicera japonica THUNB

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Abstract

Four new iridoid glycosides, named L-phenylalaninosecologanin (1), 7-O-(4-β-D-glucopyranosyloxy-3-methoxybenzoyl)secologanolic acid (2), 6′-O-(7α-hydroxyswerosyloxy)loganin (3) and (Z)-aldosecologanin (5), were isolated, together with a known one, newly named (E)-aldosecologanin (4), from the stems and leaves of Lonicera japonica. Their structures were established on the basis of chemical and spectral data.

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