Tannins and related compounds. VII. Phenylpropanoid-substituted epicatechnins, cinchonains from Cinchona succirubra. (1).
抄録
As a result of an investigation of the relatively lower-molecular-weight phenolics in the bark of Cinchona succirubra (Rubiaceae), cinchonains Ia (1), Ib (2), Ic (3) and Id (4), a new class of flavan-3-ols substituted at the A-ring with a C6-C3 unit, have been isolated, together with caffeic acid (5) and (-)-epicatechin (6). The structures of these compounds have been established on the basis of chemical and spectroscopic evidence. A direct coupling of caffeic acid and (-)-epicatechin leading to the formation of cinchonains has also been achieved.
収録刊行物
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- CHEMICAL & PHARMACEUTICAL BULLETIN
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CHEMICAL & PHARMACEUTICAL BULLETIN 30 (12), 4268-4276, 1982
公益社団法人 日本薬学会
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詳細情報
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- CRID
- 1390001204164954880
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- NII論文ID
- 130003769056
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- COI
- 1:CAS:528:DyaL3sXht1arsro%3D
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- ISSN
- 13475223
- 00092363
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- 本文言語コード
- en
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- データソース種別
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- JaLC
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- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可