Funayama S, Cordell G A
J Nat Prod. 1986 Mar-Apr;49(2):210-7. doi: 10.1021/np50044a003.
The polymerization of noracronycine (2) with methanolic HCl has yielded a second tetramer of 2, designated as AB-4 and determined to have the structure 7 through spectroscopic analysis. Two further pentamers of 2, designated as AB-6A and AB-6B, have also been obtained, and their structures are tentatively proposed as 9 and 5, respectively.
去甲克罗尼辛（2）与甲醇盐酸聚合反应生成了2的另一种四聚体，命名为AB - 4，并通过光谱分析确定其结构为7。还得到了2的另外两种五聚体，分别命名为AB - 6A和AB - 6B，其结构暂定为分别为9和5。
