| Abstrakt: |
Chemical transformations and spectral characteristics have enabled us to establish the structure and configurations of three coumarins: (+)-2',2'-dimethyl-3'ß-hydroxy-3',4'-dihydropyrano(5',6':6,7)coumarin (I); (+)-4'ß-hydroxy-5'ß-(1-hydroxy-1-methylethyl)-4',5'-dihydrofuro(2',3':6,7)coumarin (II); and (+)-4'ß-hydroxy-5'-(1-glucopyranosyloxy-1-methylethyl)-4',5'-dihydrofuro(2',3':6,7)-coumarin (III) isolated from the roots ofSmyrnopsis aucheri Karjag. This is the first time that these compounds, which have been called smyrinol, smyrindiol, and smyrindioloside, have been detected in nature. |
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