A convenient synthesis of racemic 2′-deoxy carbocyclic thymidines lacking the 5′-methylene group
作者:Jinglan Zhou、Philip B. Shevlin
DOI:10.1016/s0040-4039(98)01929-7
日期:1998.11
A convenient synthesis of racemic 2′-deoxy carbocyclic thymidines lacking the 5′-methylene group is reported. Thus, appropriately protected nucleic acid bases are coupled to 3-cyclopentenol, 1, via the Mitsunobu reaction. Epoxidation of the protected thymine substituted cyclopentene gives the corresponding syn and anti-epoxides in a 4:1 ratio. Ring opening of the syn-epoxide by a variety of nucleophiles
6-isobutyrylaminopurine: A convenient building block for the synthesis of carbocyclic adenosine analogs
作者:Jinglan Zhou、Kamal Bouhadir、Thomas R. Webb、Philip B. Shevlin
DOI:10.1016/s0040-4039(97)00867-8
日期:1997.6
Readily available 6-isobutyrylaminopurine can replace either a primary or secondary OH group under Mitsunobu conditions and provide an efficient synthesis of carbocyclic analogs of adenosine. X-ray data indicates that only the desired N9 - substituted derivatives of adenine are formed.