| Abstrakt: |
Conclusions 1.The enthalpies, geometrical parameters, and dipole moments of the optimum conformations of cyclic tetradepsipeptides with sets of configurations of the Ca atomsDDDD, DDDL, DLLD, LDLD, LDDD were calculated.2.In cyclic tetradepsipeptides, the amide and ester groups are realized in cis- and trans-configurations, respectively.3.The three-dimensional structure of the ring in substituted tetradepsipeptides represents one or several optimum forms from among those possible for4.The selection of the most preferential form of the ring in the investigated molecules is determined by the nonvalence interactions of the closest atoms of the basic and side chains. |
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