First total synthesis of antifungal cyclopeptide tunicyclin d by a solid-phase method
作者:Jun-xiang Guo、Wei-feng Wu、Chun-mei Zhang、Gen-jin Yang、Ming Juan Xu、Hong-gang Hu
DOI:10.1007/s10600-012-0270-9
日期:2012.7
The present study deals with the first total synthesis of a new antifungal cyclic octapeptide, tunicyclin D, cyclo[VNIPPWHG], where all the amino acids are L-configuration, by a two-step solid-phase/solution synthesis strategy. The linear octapeptide was assembled by a solid-phase peptide synthesis (SPPS) method. Subsequently cyclization and deprotection were achieved in solution with high efficiency and reproducibility. The final product was purified by preparative RP-HPLC, and its structure was identified by ESI-MS, 1 H NMR, 13 C NMR, and HR-QTOF-MS.
本研究采用固相/溶液两步合成策略,首次全合成了一种新的抗真菌环状八肽 Tunicyclin D,即环[VNIPPWHG],其中所有氨基酸均为 L 构型。线性八肽是通过固相肽合成(SPPS)方法合成的。随后在溶液中实现环化和脱保护,效率高,重现性好。制备型 RP-HPLC 对最终产物进行了纯化,ESI-MS、1 H NMR、13 C NMR 和 HR-QTOF-MS 对其结构进行了鉴定。