[1R-(1α,2α,4α,5β,6α,7α)]-4-Benzoyloxymethyl-5,6-dihydroxy-3,8-dioxatricyclo[5.1.0.02,4]octan-5-yl acetate (3-deacetylcrotepoxide) from Kaempferia rotunda Val.
نویسندگان
چکیده
The title compound, C(16)H(16)O(7), isolated from Kaempferia rotunda rhizomes, features a six-membered cyclo-hexane ring that adopts a twisted-boat conformation owing to the presence of two adjacent epoxide attachments that lock in four of the six axial positions. The CH(3)CO(2)- and HO- substituents occupy equatorial positions. However, the bond angles at the ring carbon connected to the C(6)H(5)CO(2)CH(2)- substituent deviate signifcantly from the idealized tetra-hedral angles as the carbon atom is part of an epoxide ring. In the crystal, the molecules are linked into chains by O-H⋯O hydrogen bonds.
منابع مشابه
Chemical Characterization of Essential Oil from the Rhizomes of Kaempferia Rotunda L. by Gc/ms Technique
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