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2005
Protection
O 0345
23- 059
A Novel Benzoyl-Type Fluorous Protecting Group for Use in Fluorous Synthesis.
— A novel protecting reagent Fbz-OH (VI) containing three fluorous chains is easily
prepared in three steps on a large scale. The Fbz group is readily introduced into both
primary and secondary alcohols, and is removed from the protected products in high
yields as ester (V). The use of the Fbz group enables the synthesis of oligosaccharides
such as (VIII) by minimal chromatographic purification. Each intermediate is obtained
by simple FC-72/organic solvent extraction. The Fbz group is stable under acidic conditions and no acyl rearrangement occurs. — (MIURA, T.; SATOH, A.; GOTO, K.;
MURAKAMI, Y.; IMAI, N.; INAZU, T.; Tetrahedron: Asymmetry 16 (2005) 1, 3-6;
Noguchi Inst., Itabashi, Tokyo 173, Japan; Eng.) — Klein
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