Synthesis of N-Demethyl-N-Substituted Dihydroisomorphine and Dihydroisocodeine Derivatives+
摘要:
Several new N-demethyl-N-alkyl derivatives (1p, 1r, 1s, 1m, 1n and 1o) of dihydroisomorphine and dihydroisocodeine, and N-demethyl-N-cyclopropylmethylisocodeine (2g) have been prepared. The presented synthetic procedure allows a convenient access to a series of structurally related, stereochemically homogeneous substances for studies of the agonist/antagonist properties.
Stereoselective synthesis of β-naltrexol, β-naloxol β-naloxamine, β-naltrexamine and related compounds by the application of the mitsunobu reac
作者:Csaba Simon、Sándor Hosztafi、Sándor Makleit
DOI:10.1016/s0040-4020(01)85541-1
日期:1994.1
As a continuation of our work, aimed at adopting the Mitsunobu reaction in the morphine series, a few representatives of dihydroisocodeines and dihydroisomorphines and their 14 beta-hydroxy analogues were prepared. p-Nitrobenzoic acid was used as carboxylic acid and the prepared esters were cleaved to obtain the title compounds. Using phthalimide as acidic component several new 6 beta-phthalimidodihydromorphine and dihydrocodeine derivatives and their 14 beta-hydroxy analogues have been synthesized. Cleavage of the phthalimido derivatives with hydrazine hydrate afforded the corresponding 6 beta-amino derivatives.
Synthesis of N-Demethyl-N-Substituted Dihydroisomorphine and Dihydroisocodeine Derivatives<sup>+</sup>
作者:Sándor Hosztafi、Csaba Simon、Sándor Makleit
DOI:10.1080/00397919208020486
日期:1992.6
Several new N-demethyl-N-alkyl derivatives (1p, 1r, 1s, 1m, 1n and 1o) of dihydroisomorphine and dihydroisocodeine, and N-demethyl-N-cyclopropylmethylisocodeine (2g) have been prepared. The presented synthetic procedure allows a convenient access to a series of structurally related, stereochemically homogeneous substances for studies of the agonist/antagonist properties.