125962-37-0Relevant articles and documents
CYCLOBUTYL PURINE DERIVATIVE OR SALT THEREOF
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Paragraph 0269-0272, (2021/05/21)
An object of the present invention is to provide a compound exhibiting an excellent drug efficacy as an anti-adenoviral agent, and an anti-adenoviral agent. The present invention provides a compound represented by General Formula [1] (in the formula, R1 represents a halogen atom, an amino group which may be substituted, a C1-6 alkoxy group which may be substituted, a hydroxyl group which may be protected, or the like; R2 represents a hydrogen atom or an amino protecting group; R3 represents a C1-20 alkoxy group which may be substituted, an aryloxy group which may be substituted, an amino group which may be substituted, or the like; R4 represents a C1-20 alkoxy group which may be substituted, an aryloxy group which may be substituted, an amino group which may be substituted, or the like); or a salt thereof.
Synthesis of 9--adenine and -guanine
Kaiwar, Vijay,Reese, Colin B.,Gray, Emily J.,Neidle, Stephen
, p. 2281 - 2288 (2007/10/02)
2,2-Dichloro-3-(benzyloxymethyl)cyclobutanone 15, which was prepared in 50percent yield by the cycloaddition of dichloroketene to allyl benzyl ether 14, was converted in four steps and in ca. 40percent overall yield into trans-3-(benzyloxymethyl)cyclobutanol 11b.The latter alcohol 11b was coupled under Mitsunobu conditions with 6-(4-chlorophenylsulfanyl)-9H-purine 21b and 6-(4-chlorophenylsulfanyl)-2-(phenylacetamido)-9H-purine 21c to give the 9-cyclobutylpurine derivatives 22 and 24, respectively, in 88 and 60percent yield.The former product 22 was converted in three steps and in 39percent overall yield into 9-adenine 6, and the latter product was converted in four steps and in 42percent overall yield into 9-guanine 7.X-Ray crystallographic data relating to compounds 22 and 24 are also reported.
Novel cyclobutane Derivatives, processes for their preparation and pharmaceutical compositions comprising them
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, (2008/06/13)
The invention is directed to cyclobutane derivatives represented by general formula (I): wherein A represents a hydrogen atom, a hydroxy group, an azido group or an amino group; and B represents a purine residue or a pyrimidine residue. The cyclobutane de