作者:Tetsuta Oshitari、Masakatsu Shibasaki、Takeshi Yoshizawa、Masahiro Tomita、Ken-ichi Takao、Susumu Kobayashi
DOI:10.1016/s0040-4020(97)00360-8
日期:1997.8
A new route to the disaccharide moiety (2-O-(3-O-carbamoyl-α-d-mannopyranosyl)-l-gulopyranose) of the antitumor agent bleomycin was developed. Both the l-gulose synthon 21 and the 3-O-carbamoyl-d-mannose segment 30 were prepared from d-mannose in a regioselective manner by applying stannylene acetal methodology. Glycosylation of 21 with 30 proceeded smoothly, and further conversion to disaccharide
开发了抗肿瘤剂博来霉素的二糖部分(2-O-(3-O-氨基甲酰基-α-d-甘露吡喃糖基)-1-古吡喃糖)的新途径。通过应用亚锡乙缩醛方法以区域选择性的方式从d-甘露糖制备l-古洛糖合成子21和3-O-氨基甲酰基-d-甘露糖片段30。21与30的糖基化顺利进行,并且成功地完成了向二糖衍生物(33和34)的进一步转化。