Chiral auxiliaries
    2.
    发明授权
    Chiral auxiliaries 失效
    手性助剂

    公开(公告)号:US5801249A

    公开(公告)日:1998-09-01

    申请号:US663258

    申请日:1996-06-24

    摘要: This invention relates to novel compounds of general formula (I): ##STR1## wherein the two R.sup.1 groups are identical lower alkyl groups or together form a lower alkylene group; R.sup.2 and R.sup.3 are both different and are selected from hydrogen atoms or organic groups; X and X', which may be the same or different, are selected from O, S and NR, where R represents an organic group; and the asterisk denotes that the configurations of R.sup.2 and R.sup.3 are such that the compound (I) is in substantially enantiomerically pure 4R- or 4S-form. The compounds are useful chiral auxiliaries to which a wide range of, for example, acyl groups containing prochiral centers may be readily and reversibly coupled to the 3-position amino group.

    摘要翻译: PCT No.PCT / GB94 / 02826 Sec。 371日期1996年6月24日 102(e)1996年6月24日PCT 1994年12月28日PCT PCT。 公开号WO95 / 18112 日期:1995年7月6日本发明涉及通式(I)的新化合物:其中两个R 1基团是相同的低级烷基或一起形成低级亚烷基; R2和R3都是不同的,并且选自氢原子或有机基团; X和X'可以相同或不同,选自O,S和NR,其中R表示有机基团; 并且星号表示R2和R3的构型使得化合物(I)基本上是对映异构体纯的4R-或4S-型。 这些化合物是有用的手性助剂,其中宽范围的例如含有前手性中心的酰基可以容易且可逆地偶联至3-位氨基。