申请人:Sankyo Company, Limited
公开号:US05541317A1
公开(公告)日:1996-07-30
Compounds of formula (I): ##STR1## wherein: R.sup.1 is hydrogen or a hydroxy-protecting group; R.sup.2 is alkyl, alkoxy, halogen, optionally substituted phenyl or optionally substituted phenoxy; R.sup.3 is optionally substituted pyridyl, optionally substituted quinolyl or phenyl group which has a substituent of formula --CYNR.sup.5 R.sup.6, where Y is oxygen or sulfur, and R.sup.5 and R.sup.6 are each alkyl, aryl or aralkyl, or R.sup.5 and R.sup.6 and the nitrogen to which they are attached together form a heterocyclic group; is R.sup.4 hydrogen or an amino-protecting group; and Z is sulfur or oxygen; are valuable intermediates in the preparation of carbapenem compounds and retain a desirable configuration during conversion to such carbapenem compounds. Penem and carbapenem compounds having a group of formula --SA' are prepared from a corresponding compound having a substituted thio, sulfinyl or sulfonyl group at this position by reaction with a compound A'SH (where A' is an organic group) in the presence of a salt of a metal of Group II or III of the Periodic Table.
化合物的化学式(I):##STR1##其中:R.sup.1是氢或羟基保护基;R.sup.2是烷基,烷氧基,卤素,可选择取代的苯基或可选择取代的苯氧基;R.sup.3是可选择取代的吡啶基,可选择取代的喹啉基或带有化学式--CYNR.sup.5 R.sup.6的苯基,其中Y为氧或硫,R.sup.5和R.sup.6分别为烷基,芳基或芳基烷基,或R.sup.5和R.sup.6以及它们连接的氮共同形成杂环基;R.sup.4为氢或氨基保护基;Z为硫或氧;在头孢内酯类化合物的制备中是有价值的中间体,并在转化为这类头孢内酯类化合物时保持理想的构型。具有化学式--SA'的头孢内酯和头孢内酯类化合物是通过将在该位置具有取代硫,亚硫酰基或磺酰基团的相应化合物与存在于周期表第II或III族金属盐的存在下与化合物A'SH(其中A'为有机基)反应制备的。