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MODELLING TRANSANNULAR CYCLIZATION OF 1(10)E,4E-GERMACRANOLIDE COSTUNOLIDE INTO EUDESMANE DERIVATIVES |
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| Authors: | B B Khasenov K M Turdybekov |
| Institution: | (1) Institute of Phytochemistry, Ministry of Education and Science of the Republic of Kazakhstan, Karaganda |
| Abstract: | Semi-empirical quantum-chemical methods were used to model transannular cyclization of 1(10)E,4E-germacranolide costunolide into eudesmanolides. The conformational states favorable for the transformation and the energy barriers were calculated. |
| Keywords: | sesquiterpene lactones germacranolides eudesmanolides guaianolides transannular cyclization quantum chemistry |
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