The invention provides compounds of Formula (I):
wherein R
1
and R
2
have any of the values or specific values defined herein, as well as compositions comprising such compounds and therapeutic methods comprising the administration of such compounds.
Preparation of cyclic ether acetals from 2-benzenesulphonylderivatives: a new mild glycosidation procedure
作者:Dearg S. Brown、Steven V. Ley、Sadie Vile
DOI:10.1016/s0040-4039(00)80631-0
日期:1988.1
those containing chemicallysensitive groups react with 2-benzenesulphonyl cyclic ethers in the presence of magnesium bromide etherate and sodium bicarbonate to give good yields of the corresponding acetals.
Use of 2-phenylsulphonyl cyclic ethers in the preparation of tetrahydropyran and tetrahydrofuran acetals and in some glycosidation reactions.
作者:Dearg S. Brown、Steven V. Ley、Sadie Vile、Mervyn Thompson
DOI:10.1016/s0040-4020(01)86389-4
日期:1991.1
2-Phenylsulphonyl cyclic ethers undergo facile displacement of the sulphonyl group by alcohols, in the presence of magnesium bromide etherate and sodium bicarbonate in tetrahydrofuran, to give goodyields of the corresponding acetals.
Efficient Tetrahydropyranylation of Alcohols and Detetrahydropyranylation Reactions in the Presence of Catalytic Amount of Trichloroisocyanuric Acid (TCCA) as a Safe, Cheap Industrial Chemical
Abstract Preparation and cleavage of THP ethers of different hydroxy functional groups are easily and efficiently performed in the presence of trichloroisocyanuric acid (TCCA) in the absence of solvent with high yields.
Electrolysis of a mixture of paraformaldehyde and terminal acetylene derivatives smoothly provided the corresponding hydroxymethylated compounds in high yields by passing less than 1 F/mol of electricity. Electroreduction of paraformaldehyde generated in situ an efficient base (EGbase), which catalyzed hydroxymethylation of the acetylenes.