作者:Vinko ?kari?、Jasenka Matuli?-Adami?
DOI:10.1002/hlca.19830660232
日期:1983.3.16
The hydrogenation of 2′, 3′-O-isopropylidene-5-methyluridine (1) in water over 5% Rh/Al2O3 gave (5 R)- and (5 S)-5-methyl-5, 6-dihydrouridine (2), separated as 5′-O-(p-tolylsulfonyl)- (3) and 5′-O-benzoyl- (5) derivatives by preparative TLC. on silica gel and ether/hexane developments. The diastereoisomeric differentiation at the C(5) chiral centre depends upon the reaction media and the nature of
2',3' - O-异亚丙基-5-甲基尿苷(1)在5%Rh / Al 2 O 3中的氢化反应得到(5 R)-和(5 S)-5-甲基-5,6-二氢尿苷(2),通过制备TLC分离为5'- O-(对甲苯磺酰基)- (3)和5'- O-苯甲酰基- (5)衍生物。硅胶和乙醚/己烷的开发。在C(5)手性中心的非对映异构分化取决于反应介质和连接到核糖基部分的保护基的性质。