| abstract |
(57) [Summary] [Purpose] Formula I (In the formula, R 1 , R 2 , R 4 and R 5 are each independently a hydroxyl group or a hydrogen atom, and R 3 is a hydrogen atom, The bond between the carbon atom having the substituent R 4 and the carbon atom having the substituent R 5 is a single bond, R 4 and R 5 represent a bond, or R 1 , R 2 and R 5 is independently of each other a hydroxyl group or a hydrogen atom, and R 3 and R 4 together are an oxo group) and a compound of formula I and a moenomycin analogue in which the trisaccharide is linked via a phosphate group. Offer of. Construction: A compound of formula I is obtained by culturing a microorganism of the genus Cryptococcus with the addition of moenomycin. The compound of formula II is obtained from the compound of formula I by synthetic means. |