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STRUCTURE DETERMINATION OF KANGLEMEISU A BY X-RAY DIFFRACTION METHOD
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作者 鲍光宏 贺存恒 +4 位作者 徐常富 姚家星 王南金 穆善田 郑启泰 《Science China Chemistry》 SCIE EI CAS 1987年第11期1181-1189,共9页
Kanglemeisu A (C50H63O19N·CH3OH) is the product of an actinomyces species from a soil sample gathered in China. Kanglemeisu A belongs to the triclinic system, space group P1,unit cell:a=12.760(3), b=10.287(2)... Kanglemeisu A (C50H63O19N·CH3OH) is the product of an actinomyces species from a soil sample gathered in China. Kanglemeisu A belongs to the triclinic system, space group P1,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 C2, a dimethyl butane diacid extended out from C20, β-D-3,4-OO’ methylenedigitoxose passing through an oxygen bridge O6 and linked to C27 of ansa ring. 展开更多
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