Preparation of 1-[ω-(1,4,5,6-Tetrahydropyrimidin-2-Yl)Alkyl]Thymines
摘要:
One-stage preparation of 1-[omega-(1,4,5,6-tetrahydropyrimidin-2-yl)-thymines from 1-(omega-cyanoalkyl)thymines and a 1:1-mixture of 1,3-diaminopropane and ethanol saturated with hydrogen sulfide is described. 1-(2-Cyanoethyl)thymine gave a facile reversal of the Michael reaction to thymine under the conditions used. The reaction of 1,3-bis(3-cyanobenzyl)thymine with the above reagent produced 1,3-bis[3-(1,4,5,6-tetrahydropyrimidin-2-yl)benzyl]thymine.
Preparation of 1-[ω-(1,4,5,6-Tetrahydropyrimidin-2-Yl)Alkyl]Thymines
作者:Jaroslaw Spychala
DOI:10.1080/00397910008087413
日期:2000.7
One-stage preparation of 1-[omega-(1,4,5,6-tetrahydropyrimidin-2-yl)-thymines from 1-(omega-cyanoalkyl)thymines and a 1:1-mixture of 1,3-diaminopropane and ethanol saturated with hydrogen sulfide is described. 1-(2-Cyanoethyl)thymine gave a facile reversal of the Michael reaction to thymine under the conditions used. The reaction of 1,3-bis(3-cyanobenzyl)thymine with the above reagent produced 1,3-bis[3-(1,4,5,6-tetrahydropyrimidin-2-yl)benzyl]thymine.
Syntheses of N-Substituted Thymine Thioacetamides. A Novel Approach to Site Selective Acylation of Diaminoalkanes
作者:Jarosław Spychała
DOI:10.1016/s0040-4020(00)00704-3
日期:2000.9
having at least one amino group attached to an aliphatic chain, has been synthesized from (1-thyminyl)thioacetamide in good isolated yields (69–86%). N-[2-(4-Imidazolyl)ethyl](1-thyminyl)thioacetamide was hydrolyzed to its amide on prolonged heating in water. Ammonium sulfide (20–22% solution in water) has found interesting new applications in the efficient synthesis of N-[2-(3-indolyl)ethyl](1-thyminyl)thioacetamide