(1S)-1,2-O-Benzylidene-α-d-glucurono-6,3-lactone
نویسندگان
چکیده
X-ray crystallographic analysis has established that the major product from the protection of d-glucoronolactone with benzaldehyde is (1S)-1,2-O-benzyl-idene-α-d-glucurono-6,3-lactone, C(13)H(12)O(6), rather than the R epimer. The crystal structure exists as O-H⋯O hydrogen-bonded chains of mol-ecules lying parallel to the a axis. The absolute configuration was determined by the use of d-glucuronolactone as the starting material.
منابع مشابه
(R)-3,4,5-Trideoxy-5,6-didehydro-1,2-O-(2,2,2-trichloroethylidene)-α-d-glucofuranose-6,3-carbolactone: a new derivative of α-chloralose
THE TITLE COMPOUND [SYSTEMATIC NAME: (R)-2-trichloro-methyl-3a,3b,7a,8a-tetra-hydro-5H-pyrano[2',3':4,5]furano[2,3-d][1,3]dioxol-5-one], C(9)H(7)Cl(3)O(5), a triyclic system that contains a central α-d-furan-ose ring cis-fused with a dioxolane ring as well as a δ-lactone ring, exhibits a twisted conformation. The CCl(3) group has an axial orientation. The furan-ose ring approximates an envelope...
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عنوان ژورنال:
دوره 65 شماره
صفحات -
تاریخ انتشار 2009