Alkylation process for preparing azetidinone compound and starting
申请人:Tanabe Seiyaku Co., Ltd.
公开号:US05550229A1
公开(公告)日:1996-08-27
Novel process for preparing azetidinone compound of the formula [III]: ##STR1## wherein R.sup.1 is H or lower alkyl, R.sup.2 and R.sup.3 combine together with the adjacent nitrogen to form heterocyclic group, and R.sup.4 is protected or unprotected hydroxy-substituted lower alkyl, which comprises reacting an alkanamide compound of the formula [I]: ##STR2## wherein R.sup.1, R.sup.2 and R.sup.3 are the same as defined above, with a compound of the formula [II]: ##STR3## wherein L.sup.1 is a leaving group and R.sup.4 is the same as defined above, in the presence of a base, said compound [III] being useful as synthetic intermediate for 1-methylcarbapenem derivative having excellent antibacterial activity.
5,6-Dihydro-2H-1,3-thiazin-4(3H)-ones 2–10 related to the natural antituberculytic Mycobacidine 1, have been synthesised. Some of the compounds of types 2,3 and 5 proved highly active in vitro against Mycobacterium tuberculosis typ. humanus (H37Rv), but the in vitro activities are diminished or suspended in the presence of biotine.
已经合成了与天然抗结核菌性霉菌碱1相关的5,6-二氢-2 H -1,3-噻嗪-4(3 H)-酮2-10。在体外,某些2、3和5型化合物被证明对结核分枝杆菌具有很高的活性。人(H 37 R v),但在存在生物碱的情况下体外活性减弱或中止。