Ontology highlight
ABSTRACT:
SUBMITTER: Petrova M
PROVIDER: S-EPMC6030305 | biostudies-literature | 2018 Jun
REPOSITORIES: biostudies-literature
Royal Society open science 20180613 6
1,4-Dihydropyridine (1,4-DHP) derivatives have been synthesized and characterized by <sup>1</sup>H, <sup>13</sup>C, <sup>15</sup>N nuclear magnetic resonance (NMR) spectroscopy, secondary proton/deuterium <sup>13</sup>C isotope shifts, variable temperature <sup>1</sup>H NMR experiments and quantum-chemical calculation. The intramolecular hydrogen bonds NH⋯O=C and CH⋯O=C in these compounds were established by NMR and quantum-chemical studies The downfield shift of the NH proton<b>,</b> accompanie ...[more]