A method for enantioselective desymmetrization of N-Ac and N-Boc-FTY720 by nonenzymatic asymmetric acylation was developed. Effective enantioselective monobenzoylation using benzoyl chloride in the presence of the tetraphenylbisoxazoline (L2)-CuCl2 complex gave the desired products 3a and 3b in 52-62% yield with 64% ee.
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http://dx.doi.org/10.1248/cpb.c14-00462 | DOI Listing |
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