Use of two-dimensional NMR and molecular modelling for the structure determination of novel cyclophosphamide derivatives: Diastereomers of 1-aza-2-bis(2-chloroethyl)- amino-3-oxa-2-oxo-2-phospha-7-thia-bicyclo- [4.4.0]decane and [4.3.0]nonane
作者:Brigitte F. Schmidt、Wei-Ci Tang、Gerhard Eisenbrand、Claus-Wilhelm Von Der Lieth、William E. Hull
DOI:10.1002/mrc.1260301212
日期:1992.12
spin–spin couplings involving 1H, 13C and 31P were analysed in detail to determine the stereochemistry. Particularly useful were 1H J‐resolved experiments, which separated phosphorus–proton couplings from proton–proton couplings, and 1H13C shift‐correlation experiments, which resolved the carbon–phosphorus couplings and provided information on the relative signs of J(P, H) and J(P,C). In addition, extensive
新合成的非对映异构体 1-aza-2-bis(2-chloroethyl)amino-3-oxa-2-oxo-2-phospha-7-thia-bicyclo[4.4.0]decanes 在 11.7 T 的高场 NMR 研究( 4, 5) 和相应的 [4.3.0] 壬烷 (6, 7) 是通过一维和二维同核和异核方法的组合进行的。获得了这些环磷酰胺双环衍生物的明确 31P、1H 和 13C 化学位移分配,并详细分析了涉及 1H、13C 和 31P 的自旋-自旋偶联以确定立体化学。特别有用的是 1H J 解析实验,它将磷 - 质子耦合与质子 - 质子耦合分开,以及 1H 13C 位移相关实验,它解析了碳 - 磷耦合并提供了关于 J(P, H ) 和 J(P,C)。此外,使用各种力场(ALCHEMY、DISCOVER)和分子轨道方法(MNDO、AM1、PM3)进行了广泛的分子建模计算,并为 ALCHEMY