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STRUCTURE DETERMINATION OF KANGLEMEISU A BY X-RAY DIFFRACTION METHOD

作者姓名：	鲍光宏贺存恒徐常富姚家星王南金穆善田郑启泰

作者单位：	Institute of Basic Medical Sciences，Chinese Academy of Medical Sciences，Beijing，Institute of Basic Medical Sciences，Chinese Academy of Medical Sciences，Beijing，Institute of Basic Medical Sciences，Chinese Academy of Medical Sciences，Beijing，Institute of Physics，Academia Sinica，Beijing，Institute of Antibiotica，Chine Academy of Medical Sciences，Beijing，China-Japan Friendship Hospital，Beijing，Institute of Materia Medica，Chinese Academy of Medical Sciences，Beijing

摘要：	Kanglemeisu A (C_(50)H_(63)O_(19)N·CH_3OH) is the product of an actinomyces species from a soil sample gathered in China. Kanglemeisu A belongs to the triclinic system, space group P_1,unit cell:a=12.760(3), b=10.287(2), c=9.926(2) , α=88.39(2),β=78.64(2), γ=89.14(2). RANTAN direct method is used to solve the structure.The final discrepancy factor is R=0.0689, after atom coordinates and temperature factors have been refined with full matrix least squares.The structure skeleton consists of four parts, the naphthalene nucleus connected to the 5-membered ring, a 17-membered ring connected to C_2, a dimethyl butane diacid extended out from C_(20), β-D-3,4-OO' methylenedigitoxose passing through an oxygen bridge O_6 and linked to C_(27) of ansa ring.
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