Methyl 3-acetoxy-3-dehydroxyursolate
نویسندگان
چکیده
Four of the five six-membered rings of the title penta-cyclic triterpene, C(33)H(52)O(4), adopt chair conformations; the fifth, which has a C=C double bond, adopts an approximate envelope conformation.
منابع مشابه
Methyl 4-acetoxy-2-methyl-2H-1,2-benzothiazine-3-carboxylate 1,1-dioxide
In the title compound, C(13)H(13)NO(6)S, the thia-zine ring adopts a distorted half-chair conformation. Each mol-ecule is linked to its neighbour through inter-molecular C-H⋯O hydrogen bonds.
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IN THE TITLE COMPOUND [SYSTEMATIC NAME: (1R,3S,5R,6S)-8-methyl-3-(4-methyl-phenyl-sulfon-yloxy)-8-aza-bicyclo-[3.2.1]octan-6-yl acetate], C(17)H(23)NO(5)S, the fused piperidine ring exists in a chair conformation with the N atom and one C atom displaced by 0.876 (2) and -0.460 (3) Å, respectively, on opposite sides of the mean plane defined by the other four atoms. The fused pyrrolidine ring ad...
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عنوان ژورنال:
دوره 65 شماره
صفحات -
تاریخ انتشار 2009