A simple procedure for the synthesis of 2,3-unsaturated glycosides in acetonitrile and tetrahydropyranylation of alcohols and phenols in dichloromethane in the presence of 3,5-dinitrobenzoicacid is described. A variety of alcohols and thiols are reacted with glycals to give the desired products in high yields with high α-selectivity.
[EN] BIPYRIDINE MANGANESE COMPLEXES<br/>[FR] COMPLEXES DE MANGANÈSE DE BIPIRYDINE
申请人:EUKARION INC
公开号:WO2000009512A2
公开(公告)日:2000-02-24
Compounds and methods of preparing compounds represented by structural formula (I) wherein X represents any suitable counter-anion; R?1 and R2¿ independently represent hydrogen, C¿1-6? alkoxy or nitro; R?3, R4, R5 and R6¿ each independently represents hydrogen, hydroxy, halo, C¿1-6? alkyl, C2-6 alkenyl or C1-6 alkoxy; and R?7, R8, R9 and R10¿ each independently represents hydrogen, hydroxy, halo, C¿1-6? alkyl, C2-6 alkenyl or C1-6 alkoxy. Compounds represented by structural formula (I) are useful in treating or preventing free radical-associated diseases or conditions in mammals.