Structure and Biosynthesis of Chrysophysarin A, a Plasmodial Pigment from the Slime Mould Physarum polycephalum (Myxomycetes)
作者:Sophie Eisenbarth、Bert Steffan
DOI:10.1016/s0040-4020(99)01020-0
日期:2000.1
optically-active pigment, chrysophysarin A (1), has been isolated from microplasmodia of the slime mould Physarum polycephalum. The structure was established by means of 1D and 2D NMR spectroscopy and mass spectrometry. The absolute configuration was assigned by the synthesis of N-(3,3-dimethylacryloyl) derivatives of (S)- and (R)-leucine and by comparison of the corresponding CD spectra. The biosynthesis of the
一种黄色的旋光性色素,chrysophysarin A(1),已从粘液霉菌多头Phys的微浆菌中分离出来。该结构通过1D和2D NMR光谱法和质谱法建立。通过合成(S)-和(R)-亮氨酸的N-(3,3-二甲基丙烯酰基)衍生物并通过比较相应的CD光谱来确定绝对构型。通过将标记的乙酸盐进料到疟原虫中来阐明该化合物的生物合成。