Phorbasides A−E, Cytotoxic Chlorocyclopropane Macrolide Glycosides from the Marine Sponge <i>Phorbas</i> sp. CD Determination of <i>C</i>-Methyl Sugar Configurations
作者:John B. MacMillan、Guang Xiong-Zhou、Colin K. Skepper、Tadeusz F. Molinski
DOI:10.1021/jo702307t
日期:2008.5.1
cytotoxic macrolide glycosides phorbasides A−E (3−7), each possessing a macrolidering appended to a rare ene-yne-trans-2-chlorocyclopropane, were isolated from the same Western Australian sponge (Phorbassp.) that provided phorboxazoles A and B. The structures of 3–7 were solved by analysis of spectroscopic data including NMR, MS, and CD. A synthesis of methyl 2-O-methyl-α-l-evalose from l-rhamnose