Synthesis of thiosugars as weak inhibitors of glycosidases
作者:Yves Le Merrer、Myrielle Fuzier、Isabelle Dosbaa、Marie-José Foglietti、Jean-Claude Depezay
DOI:10.1016/s0040-4020(97)10096-5
日期:1997.12
enantiomerically pure thiosugars (1,6-dideoxy-1,6-thio-D-mannitol or L-iditol, 1,5-dideoxy-1,5-thio-L-gulitol or D-glucitol and 2,5-dideoxy-2,5-thio-L-iditol or D-mannitol, and their corresponding sulfoxide or sulfone) was synthesized via thiocyclization of C2-symmetric bis-epoxides, and subsequently followed by ring isomerization in few cases. These compounds have been evaluated as inhibitors of several
作者:Myrielle Fuzier、Yves Le Merrer、Jean-Claude Depezay
DOI:10.1016/0040-4039(95)01273-k
日期:1995.9
Enantiomerically pure thiosugars, with a thiepan, tetrahydrothiopyrum or tetrahydrothiophene backbone, have been synthesized by thio-heterocyclization of enantiopure C-2-symmetric bis-epoxides and possibly ring contraction.
Another mode of heterocyclization of an enantiopure C2-symmetric bis-epoxide leading to the symmetric dialkyl sulfide
Reexamination of heterocyclization of an enantiopure C2-symmetric bis-epoxide (7) with sodium sulfide is described. In addition to the reported processes leading to thiane (4a) and thiepane (6), another mode of cyclization was found to occur to a considerable extent, affording a symmetric dialkyl sulfide (5), and the structure of the main product reported (4a) has been revised. Conditions for the chemoselective