Pyrrolizidine alkaloids necine bases: II
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Giordan, Marcelo
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Article
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1998
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John Wiley and Sons
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English
β 335 KB
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Molecular mechanics calculations were applied to the Ε½ . conformational analysis of two diasteroisomers, the pyrrolizidine alkaloids PAs retronecine and heliotridine. The application of reoptimized parameters for H Ε½ . bonding corrected the tendency of MM3 92 calculations to give unrealistic H ΠΈΠΈΠΈ O