Structural Elucidation of Murrafolines, Six Novel Binary Carbazole Alkaloids Isolated from Murraya euchrestifolia.
作者:Hiroshi FURUKAWA、Chihiro ITO、Tian-Shung WU、Andrew T. MCPHAIL
DOI:10.1248/cpb.41.1249
日期:——
In previous studies on the chemical constituents of Murraya euchrestifolia HAYATA (Rutaceae) collected in Taiwan, we preliminarily reported the first isolation and structure of a binary carbazole alkaloid, murrafoline-A (1). Since then, the isolation and spectroscopic structural elucidation of three new binary carbazoles, murrafoline-B (2), -C (5), and -D (3), have been reported. This paper describes in detail the structural elucidation of these novel binary carbazole alkaloids and also introduces two additional ones, murrafoline-G (4) and -H (6). Treatment of a mixture of girinimbine (7) and murrayafoline-A (8), which are monomeric carbazoles and structural components of murrafolines, with Nafion 117, an acidic perfluorinated ion-exchange resin, was found to produce murrafoline-D (3), -G (4), and -H (6).
在之前对台湾采集的Murraya euchrestifolia HAYATA(芸香科)的化学成分研究中,我们初步报道了二元咔唑生物碱murrafoline-A(1)的首次分离和结构。此后,又有三种新的二元咔唑生物碱murrafoline-B(2)、-C(5)和-D(3)的分离和光谱结构解析被报道。本文详细描述了这些新型二元咔唑生物碱的结构解析,并介绍了另外两种生物碱murrafoline-G(4)和-H(6)。将作为murrafolines结构成分的单体咔唑化合物girinimbine(7)和murrayafoline-A(8)的混合物与酸性全氟离子交换树脂Nafion 117处理,发现可生成murrafoline-D(3)、-G(4)和-H(6)。