Sponholtz William R, Bianco Michelle A, Gribble Gordon W
Department of Science, Cushing Academy, Ashburnham, MA 01430, USA.
Nat Prod Res. 2008 Mar 20;22(5):440-7. doi: 10.1080/14786410701591788.
The known cembranoid diterpene eunicin (1) was isolated from a new genus of octocoral, Pseudoplexaura, collected in the Caribbean. The complete assignment of the 13C and 1H NMR spectra, including differentiation of pro-R and pro-S hydrogens and elucidation of all J values, was accomplished with the aid of TOCSY, HSQC, and HMBC data, and a consideration of three low-energy conformations using SYBYL.
从在加勒比海采集的八放珊瑚新属——拟丛柳珊瑚属中分离出了已知的柳珊瑚二萜类化合物尤尼辛（1）。借助全相关谱（TOCSY）、异核单量子相干谱（HSQC）和异核多键相关谱（HMBC）数据，并通过使用SYBYL软件考虑三种低能量构象，完成了碳-13（¹³C）和氢-1（¹H）核磁共振谱的完全归属，包括对前手性R和前手性S氢的区分以及所有耦合常数（J值）的确定。
