Tetrahedron Letters p. 2151 - 2154 (1987)
Update date:2022-08-04
Topics:
Chern, Ji-Wang
Lee, Horng-Yuh
Huang, Min
Shish, Fang-Jy
Isoguanosine (4b) was synthesized by a one-pot reaction involving a condensation of 5-amino-1-(β-D-ribofuranosyl)imidazole-4-carboxamide (1b) with benzoyl isothiocyanate, treatment of the resulting thiourea derivative with DCC furnished 5-(N1-benzoylcarbamoyl)aminoimidazole-4-carbonitrile (3b) which was then annulated with ethanolic ammonia to afford isoguanosine in a 68percent yield from 1b.
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(2019)
