| 摘要 |
PCT No. PCT/GB94/02827 Sec. 371 Date Aug. 12, 1996 Sec. 102(e) Date Aug. 12, 1996 PCT Filed Dec. 28, 1994 PCT Pub. No. WO95/18134 PCT Pub. Date Jul. 6, 1995This invention relates to novel compounds of general formula (I) wherein R1 represents an organic group, R2 represents a hydrogen atom or an organic group, and the asterisk denotes that the group R1 is predominantly in the R- or S-configuration such that the compound is in substantially enantiomerically pure form. The compounds are a useful source of chiral nucleophiles, e.g. undergoing stereoselective Michael addition to alpha , beta -unsaturated carboxylic acid derivatives. |
