4105-61-7Relevant academic research and scientific papers
Expeditious synthesis of enantiopure symmetrical macroheterocycles by ring-closing metathesis of ether and tether-linked 1,2-O- isopropylidenefuranosides
Biswas, Goutam,Sengupta, Jhimli,Nath, Madhumita,Bhattacharjya, Anup
, p. 567 - 578 (2007/10/03)
Bis-olefinic symmetrical carbohydrate derivatives were prepared by joining two 1,2-O-isopropylidenefuranose units either through an ether linkage or by a tether of variable size. The ring-closing metathesis (RCM) of these substrates using Grubbs' first-ge
Thio-sugars. I. Radical-promoted thione-thiol rearrangement of cyclic thionocarbonates: Synthesis of 5-thioglucose
Tsuda, Yoshisuke,Sato, Yoshiyuki,Kanemitsu, Kimihiro,Hosoi, Shinzo,Shibayama, Kenji,Nakao, Kayo,Ishikawa, Yuko
, p. 1465 - 1475 (2007/10/03)
The 5,6-O-thiocarbonyl-α-D-glucofuranose derivatives 2, when subjected to one of the following reactions, undergo a radical-promoted thione-thiol rearrangement to yield the 5-S-thiolcarbonates of gluco-configuration 8 as the major product. The reactions are, (A) thermolysis with a catalytic amount of tributyltin hydride and AIBN, (B) photolysis with hexabutyldistannane, and (C) thermolysis with dimethyl phosphonate and benzoyl peroxide. On the other hand, thermolysis of 2 with trialkylsilane (condition D) yielded olefins 13 as the major product. The 5-S-gluco product 8 was converted, in three steps, to 5-thioglucose (21) in 55% yield.
