Macrosphelides EâI have been isolated, along with known macrosphelides A and C, from a strain of Periconia byssoides originally separated from the sea hare Aplysia kurodai, and the absolute stereostructures of macrosphelides EâG and I have been elucidated on the basis of spectroscopic analyses using 1D and 2D NMR techniques and some chemical transformations. In addition, the absolute configuration of macrosphelide C, previously undetermined, has been established by X-ray analysis and application of the modified Mosher method. Macrosphelides EâH inhibited the adhesion of human-leukaemia HL-60 cells to HUVEC.
宏球苷E–I与已知的宏球苷A和C一起从最初从海兔Aplysia kurodai分离出的Periconia byssoides菌株中提取出来,并且宏球苷E–G和I的绝对立体结构已通过使用1D和2D NMR技术的光谱分析及一些
化学转化进行阐明。此外,之前未确定的宏球苷C的绝对构型已通过X射线分析和改良的Mosher方法确立。宏球苷E–H抑制了人类白血病HL-60细胞与HU
VEC的粘附。