作者:Paweł Serafinowski
DOI:10.1055/s-1987-28109
日期:——
3′-Deoxyformycin was prepared by transformation of the formycin A with 2-acetoxyisobutyryl bromide. Both formycin A and its 3′-deoxy analogue were converted into their 5′-chloro-5′-deoxy derivatives with thionyl chloride. Finally 5′-chloro-5′-deoxy formycin A and 5′-chloro-3′,5′ dideoxyformycin A were condensed with L-homocysteine sodium salt to give S-formycinyl-L-homocysteine and S-3′-deoxyformycinyl-L-homocysteine in good yields.
3′-去氧福尔米辛是通过将福尔米辛A与2-乙酸氧异丁酰溴化物反应制备的。福尔米辛A及其3′-去氧类似物均与氯化亚硫酰转化为各自的5′-氯-5′-去氧衍生物。最后,5′-氯-5′-去氧福尔米辛A和5′-氯-3′,5′-二去氧福尔米辛A与L-同型半胱氨酸钠盐缩合,良好收率地得到S-福尔米辛基-L-同型半胱氨酸和S-3′-去氧福尔米辛基-L-同型半胱氨酸。