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Structure of a new steroid 24 S -ergost-4-en-3,6-dione from Aconitum septentrionale

Structure of a new steroid 24 S -ergost-4-en-3,6-dione from Aconitum septentrionale K. A. Eshbakova (99871) 120 64 75 e_komila@yahoo.com B. Tashkhodzhaev Zh. I. Tursunov K. K. Turgunov Kh. M. Bobakulov N. D. Abdullaev S. Yu. Yunusov Institute of the Chemistry of Plant Substances Academy of Sciences of the Republic of Uzbekistan Tashkent Uzbekistan β -Sitosterol and the new phytosteroid 24 S -ergost-4-en-3,6-dione were isolated from the industrial extraction waste of the alkaloid-bearing plant Aconitum septentrionale Koelle. The structure of the isolated compound was determined by x-ray structure analysis and PMR, 13 C NMR, and IR spectroscopy. The crystal structure of the steroid contains a disordered terminal 24-methyl,24-isopropyl group that occupies two positions in a 0.55:0.45 ratio. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Chemistry of Natural Compounds Springer Journals
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