Zhang F, Vasella A. Regioselective synthesis of 1I,1II,5I,5II,6I,6I,6II,6II-2H8-cellobiose.
Carbohydr Res 2007;
342:2546-56. [PMID:
17803982 DOI:
10.1016/j.carres.2007.07.017]
[Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2007] [Revised: 07/13/2007] [Accepted: 07/23/2007] [Indexed: 11/23/2022]
Abstract
Partially deuteriated 1,5,6,6-(2)H(4)-d-glucose and 1(I),1(II),5(I),5(II),6(I),6(I),6(II),6(II)-(2)H(8)-d-cellobiose were synthesized in high yields and on a large scale from d-glucose. (2)H enrichment at C-5 and C-6 of each glucopyranosyl unit in excess of 85% and 90%, respectively, was realized by (1)H-(2)H exchange in (2)H(2)O containing deuteriated Raney Ni. Nucleophilic addition of LiAlD(4) to 5,6,6-(2)H(3)-2,3,4,6-tetra-O-benzyl-d-gluconolactone led to a 98% (2)H enrichment at C-1. Deuteriated cellobiose is of interest as building block for the synthesis of a model compound of cellulose I.
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