Design and synthesis of nonpeptide angiotensin II receptor antagonists featuring acyclic imidazole-mimicking structural units
摘要:
Extensive molecular modelling studies, including conformational analysis and the comparison of molecular electrostatic potential distributions, were used to evaluate structural parameters of new antagonists containing acyclic replacements of the N = C-N imidazole region. The synthesis and the biological screening of a series of acyl biphenyltetrazole derivatives were planned and realized to gain an insight into the structure-activity relationships of this unusual class of Angiotensin II antagonists. (C) 1998 Elsevier Science Ltd. All rights reserved.
AbstractA strategy for transition metal‐free cross‐coupling of alkyl nitroso‐carbamates and boronic acids is reported. The N‐nitroso carbamates are easily prepared from the corresponding amine in two simple steps. This method allows for the synthesis of a wide variety of secondary boronates, benzylic boronates and formal Csp3−Csp2 cross‐coupling products under operationally simple conditions. Functional group tolerance is also demonstrated and applied in the modification of lysine to make non‐canonical amino acids.
Extensive molecular modelling studies, including conformational analysis and the comparison of molecular electrostatic potential distributions, were used to evaluate structural parameters of new antagonists containing acyclic replacements of the N = C-N imidazole region. The synthesis and the biological screening of a series of acyl biphenyltetrazole derivatives were planned and realized to gain an insight into the structure-activity relationships of this unusual class of Angiotensin II antagonists. (C) 1998 Elsevier Science Ltd. All rights reserved.