- InBr 3 -Catalyzed Synthesis of Aryl 1,2- trans -Thio(seleno)glycosides
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InBr 3 is demonstrated to be an efficient catalyst for reactions of fully acetated aldoses with aryl mercaptans or selenophenol at room temperature, rapidly furnishing the corresponding thioglycosides or selenoglycosides with exclusively 1,2- t
- Ma, Teng,Li, Changwei,Liang, Haijing,Wang, Zhaoyan,Yu, Lan,Xue, Weihua
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supporting information
p. 2311 - 2314
(2017/10/06)
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- Stereoselective synthesis of nucleosides from 1-thio and 1-seleno glycosides through consecutive 1,2-migration and glycosylation under Mitsunobu conditions
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2-Deoxy-2-sulfenyl-arabino-α-nucleosides and 2-deoxy-2-sulfenyl-ribo- β-nucleosides were obtained with excellent stereoselectivity from 1-thio- ribo- and 1-thio-arabino-glycosides under Mitsunobu conditions.
- Viso, Antonio,Poopeiko, Nicolai,Castillón, Sergio
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p. 407 - 411
(2007/10/03)
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- Synthesis of C-glycosyl lactones and protected C-glycosyl amino acids: Use of radical cyclization
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Protected carbohydrates 6a-13a, having one free hydroxyl and a phenylseleno group or halogen on the adjacent carbon, were condensed with (2,2-diphenylhydrazono)acetic acid (2); the resulting esters undergo radical cyclization to afford carbohydrates fused to a 2,2-diphenylhydrazino lactone unit (6c,d-13c,d). In suitable cases (9c,d) such carbohydrate lactones can be elaborated into C-glycosyl amino acids.
- Zhang, Junhu,Clive, Derrick L. J.
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p. 770 - 779
(2007/10/03)
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- PHOTOREARRANGEMENT OF PHENYL SELENIDE DERIVATES. ACCESS TO SELENIUM SUBSTITUTED C-NUCLEOZIDES
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The photorearrangements of benzyl phenyl selenide and phenyl ribosyl selenide derivatives afford 2-benzyl phenylselenol and 2-ribosyl phenylselenol, respectively which can be isolated as their methyl derivatives.
- Fourrey, J.-L.,Henry, G.,Jouin, P.
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p. 455 - 458
(2007/10/02)
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