モクレン科植物アルカロイド研究 : 第39報カチラチライノキMagnolia kachirachirai DANDYのアルカロイドその3

概要

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From the duramen of Magnolia hachirachirai DANDY, which was maintained for 7 years after the collection, bases shown in Table I have been isolated. Among them, base C, orange yellow needle crystals, mp 225-226° (decomp.), [α]_D ±0° (CHCl_3), C_<20>H_<17>O_5N, has been identified to be 1,2,9,10-tetramethoxy-7H-dibenzo[de, g]quinoline-7-one (V). Base D, whose HBr salt, being colorless columnar crystals, mp 248-250°, [α]_D +102° (MeOH), has been certified to be d-N-norglaucine (II), which is coincident with N-methyl derivatives of d-glaucine (II). As it is previously reported, immediate treatment after the collection of Magnolia kachirachirai DANDY afforded d-glaucine (I) as a main base, however, 7 years after the collection, the main base was to be 1,2,9,10-tetramethoxy-7H-dibenzo[de, g]quinoline-7-one (V), besides a trace of d-glaucine (I).
公益社団法人日本薬学会の論文
1968-09-25