期刊
TETRAHEDRON LETTERS
卷 46, 期 31, 页码 5143-5147出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2005.05.125
关键词
picolinate; alcohol protecting group; zinc acetate; copper acetate
As an efficient alcohol protecting group, picolinates (Pic), prepared from the corresponding alcohols using commercial picolinoyl chloride, are readily cleaved by Zn(OAc)(2) or Cu(OAc)(2), even in the presence of other common alcohol protecting groups. Moreover, the picolinyl group at C-2 position in carbohydrates can be selectively cleaved to give methyl 4,6-O-benzylidene-3-O-picolinyl-alpha-D-glucopyranoside and 3-O-picolinyl methyl-4,6-O-benzylidene-alpha-D-galactopyranoside in good yields. (c) 2005 Elsevier Ltd. All rights reserved.
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