| 摘要 |
NEW MATERIAL:A compound expressed by formula I [R<1> represents OH, benzoyloxy, acetyloxy, halogen atom or formula II (R<6> represents H or benzoyl; R<7> and R<8> represent alkyl); R<2> represents H, benzyl or acetyl; R<3> represents H or acetyl; R<4> represents H; R<5> represents acetyl or R<4> and R<5> link together to form phthaloyl]. EXAMPLE:A compound expressed by formula III. USE:An intermediate for synthesis of a lacto-ganglio line sphingoglycolipid. PREPARATION:A compound expressed by formula IV (Ac represents acetyl; Bn represents benzyl; Phth represents phthaloyl) is reacted with a compound expressed by formula V (X represents halogen atom) in the presence of a glycosylation catalyst, as necessary followed by dephthloylation and acetylation to obtain a compound expressed by formula VI.
|
