Thus, depending on the 273 experimental conditions, papain is capable to cleave or couple the Gly-Leu bond. Structures of Neoefrapeptins B, C and E The two compounds neoefrapeptin B and C (2, 3) were isolated as a homogenous peak having the same molecular mass. In a single experiment...
Molecular-mechanics modelling suggested that hydrogen bonding between the free carboxylate group of monodentate Me-Mal and the co-ordinated amine groups, and between the two ring-opened ligands may contribute to the stability of the mixed-ligand adducts.However, in the case of Met-Gly, the ring-...
Despite the importance of cis-trans geometry in the chemistry of Pt(II), the distortion isomers atom is far more common. Recently, we detail analysed the structural data of distortion isomers of the cis-Pt(II) complexes, and none of the cis-isomer has a trans-partner. The distortion ...
with appropriate tandem or sequential electrophilic quenches allows the asymmetric syntheses of β-phenylalanine (95% enantiomeric excess) and homochiral (2R, 3S)- and (2S, 3S)-α-methyl-β-phenylalanine and the corresponding β-lactams (3R, 4S)- and (3S, 4S)-3-methyl-4-phenylazetidinones...
in aqueous solution to form a product mixture of Z and E isomers of -CH2-C:C-R substituted azabicyclooxime ethers; (b) simultaneously or sequentially adding one or more acids effective to enrich said product mixture in the Z-isomer of said -CH2-C:C-R substituted azabicyclooxime ether; (...