| 摘要 |
PCT No. PCT/EP93/01908 Sec. 371 Date Feb. 21, 1995 Sec. 102(e) Date Feb. 21, 1995 PCT Filed Jul. 20, 1993 PCT Pub. No. WO94/03457 PCT Pub. Date Feb. 17, 1994 <IMAGE> (I) A process for the preparation of (-)-eserethole, of formula (I) starting from (+)-eserethole, or from mixtures of (+/-)-and (-)-eserethole in which the latter enantiomer prevails, by treating (+/-)-eserethole or mixtures of (+)-and (-)-eserethole enriched in the latter enantiomer, with 0.5-0.7 mole (per mole of the enantiomeric mixture) of a resolution agent, to yield a (-)-eserethole salt less soluble than the corresponding (+)-eserethole salt.
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