Negi N, Ochi A, Kurosawa M, Ushijima K, Kitaguchi Y, Kusakabe E, Okasho F, Kimachi T, Teshima N, Ju-Ichi M, Abou-Douh AM, Ito C, Furukawa H. Two new dimeric coumarins isolated from Murraya exotica.
Chem Pharm Bull (Tokyo) 2005;
53:1180-2. [PMID:
16141593 DOI:
10.1248/cpb.53.1180]
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Abstract
Bismurrangatin and murramarin A, two new coumarins, were isolated from the vegetative branches of Murraya exotica. Murramarin A is a rare type of bicoumarin that connects two coumarin moieties by orthoester structure. The structures were elucidated based on spectroscopic methods, especially by 2D-NMR experiments.
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