Funayama S, Cordell G A
J Nat Prod. 1985 Jul-Aug;48(4):536-46. doi: 10.1021/np50040a004.
Improved synthetic procedures for the formation of a number of dimeric derivatives of noracronycine (2) are described based on acid-catalyzed reactions in methanolic HCl or methanolic H2SO4. A detailed analysis of their high-field proton nmr spectral characteristics is presented. The synthesis and structure determination of a new trimer of noracronycine (2) possessing the linear-angular-angular structure (15) is described.
基于在甲醇盐酸或甲醇硫酸中的酸催化反应,描述了制备降槟榔次碱(2)的多种二聚衍生物的改进合成方法。对它们的高场质子核磁共振光谱特征进行了详细分析。描述了具有线性-角形-角形结构(15)的降槟榔次碱(2)新三聚体的合成和结构测定。