The reaction of some sodiumalkoxides with 4,4-dichloro-1,1-diphenyl-2-azabuta-1,3-diene is described. Whereas sodium methoxide, ethoxide or isopropoxide leads to 1,3-bis(alkoxy)- and/or 1,3,4-tris(alkoxy)-2-azabut-2-enes, the sodium salt of ethyl glycolate gives a Δ2-oxazoline. Mechanisms for the formation of these products are proposed.
7-amido-1,8-naphthyridines as hydrogen bonding units for the complexation of guanine derivatives: The role of 2-alkoxyl groups in decreasing binding affinity
作者:Thomas J. Murray、Steven C. Zimmerman
DOI:10.1016/0040-4039(95)01586-7
日期:1995.10
The unusually low stability of a hydrogen bonded complex between a guanosine derivative and a 7-amido-2-alkoxy-1,8-naphthyridine, containing the DAA-ADD motif, can be explained by a conformational/steric effect.