Syntheses and anti-tubercular activity of β-substituted and α,β-disubstituted peptidyl β-aminoboronates and boronic acids.

Tuberculosis is still affecting millions of people worldwide, and new resistant strains of Mycobacterium tuberculosis are being found. It is therefore necessary to find new compounds for treatment. In this paper, we report the synthesis and in vitro testing of peptidyl β-aminoboronic acids and β-aminoboronates with anti-tubercular activity.

Boron-containing peptidomimetics--a novel class of selective anti-tubercular drugs.

Medical treatment for tuberculosis is complicated nowadays by the appearance of new multiresistant strains, and therefore, new antibiotics are in great need. Here, we report the synthesis and in vitro testing of a new class of highly selective antimicrobial boron-containing peptidomimetics with compounds exhibiting activity against Mycobacterium tuberculosis at ≤5 μg/mL. The new approach developed makes it possible to synthesize variously substituted β-aminoboronic acids and their derivatives with a high level of diastereoselectivity.

Potassium [(1S)-1-azido-2-phenyl-eth-yl]trifluorido-borate.

The title compound, K(+)·C(8)H(8)BF(3)N(3) (-), is a salt containing the chiral organic trifluorido-borate anion. The organic anions and potassium cations are tightly bound to each other by the coordination K-F [2.654 (3)-3.