Carbon-13 nuclear magnetic resonance study of meso-hexestrol and its derivatives.
作者:TAIKO ODA、TOMOKO MURAI、YOSHIHIRO SATO
DOI:10.1248/cpb.36.1534
日期:——
The carbon-13 unclear magnetic resonance chemical shift assignments for meso-hexestrol (1a), made on the basis of two-dimensional 13-1H chemical shift correlation, long-range selective 1H decoupling experiment, and a reported two-dimensional Fourier-trasform experiment for long-range proton-carbon-13 spin coupling constants, are reported. For measurement of carbon-protoncoupling constants of meso-hyxestrol derivatives (1b-e, 2a-d, 3a-c, and 4), the coupling informaiton was detected by using a gated decoupling facility which permitted retention of the nuclear Overhauser enhancement and a long-range selective 1H decoupling experiment. The results showed that the aromatic carbon resonances are influenced by the structure (no double bond, or one or two double bond(s)) of the hexane framework in the central portion.
根据二维 13-1H 化学位移相关性、长程选择性 1H 去耦实验和已报道的长程质子-碳-13 自旋耦合常数的二维傅立叶变换实验,报告了中-己烯雌酚(1a)的碳-13 不清晰磁共振化学位移分配。在测量中-己烯雌酚衍生物(1b-e、2a-d、3a-c 和 4)的碳-质子耦合常数时,使用了门控去耦设备检测耦合信息,该设备允许保留核奥弗霍瑟增强和长程选择性 1H 去耦实验。结果表明,芳香碳共振受中央部分己烷框架结构(无双键或一个或两个双键)的影响。