Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: (S)-Propane-1,2-diamine dihydrochloride, is researched, Molecular C3H12Cl2N2, CAS is 19777-66-3, about Topography of nucleic acid helices in solutions. IX. Models for the interactions of optically active diamines, amino acid amides, diamino acids, and lysyl dipeptides with nucleic acid systems.Quality Control of (S)-Propane-1,2-diamine dihydrochloride.
Mol. framework models of the complexes formed between the salts N+H3CHRCONHCH2CH2N+Me2N.2Br- (I), N+H3C(CO2-)H(CH2)nH+H3Cl- (n = 2, 3, and 4) (II), N+HEC[CH2]4N+H3]HCONHCHRCO2-Cl-, (III), and N+H3CHRCH2N+H3.2Cl- (R = Me and CO2H) (IV) and adjacent phosphate anions of a helical polynucleotide chain were examined in detail; 15-, 16-, 17-, and 18-membered rings are formed as the result of complexing the salts I-IV to the nucleic acid helix. Certain conformations are not as favorable as other. Moreover, it is possible to predict which of the two optical isomers of I-IV should interact to a greater extent with a nucleic acid helix. The results using 11 different sets of optical isomers of I-IV on three different helical structures, i.e., poly I-poly C, poly A-poly U, and calf thymus DNA, were predicted correctly and consistently.
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