PHYTOECDYSTEROIDS OF PLANTS OF THE GENUS Silene. XI. 2-DEOXY-α-ECDYSONE 3-ACETATE FROM Silene scabrifolia

Article abstract of DOI:10.1007/BF00579812

From the epiteal organs of silene scabrifolia Kom. has been isolated the new phytoecdysteroid 2-deoxy-α-ecdysone 3- acetate (II) (0.0011percent), C29H46O6, mp 216-218 deg C, <α>_D²⁰ +131.9 deg (methanol).The enzymatic hydrolysis of (II) led to 2-deoxy-α-ecdysone (I).The acetylation of 2-deoxy-α-ecdysone (I) yielded (II) and the 22-monoacetate (III) and 3,22-diacetate (IV) of 2-deoxy-α-ecdysone, which heve been described previously.Details of the IR, UV, CD, mass, and NMR spectra are given for (I) and of the IR, mass, and NMR spectra for (III).