A. Boussoufi et al., LPHA-METHOXY-ALPHA-(6H-1,3-THIAZIN-2-YL)GLYCINATES PRECURSORS OF 7-METHOXYCEPHEMS BY [3-CYCLOCONDENSATION REACTION(3]), Tetrahedron, 50(44), 1994, pp. 12609-12624
We report here a new widely useful and applicable preparation of funct
ionalised 6H-1,3-thiazinic cycloadducts, versatile key intermediates i
n the total multistep syntheses of 7-methoxycephems (as analogues of 7
-methoxycephalosporins).