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|Title:||Enantiomeric synthesis of polyhydroxylated indolizidine analogues related to castanospermine: 1-Deoxy-7-epicastanospermine and 1,7-dideoxy-7-fluorocastanospermine|
|Authors:||Lee, C.-K. |
|Citation:||Lee, C.-K., Sim, K.Y., Zhu, J. (1992). Enantiomeric synthesis of polyhydroxylated indolizidine analogues related to castanospermine: 1-Deoxy-7-epicastanospermine and 1,7-dideoxy-7-fluorocastanospermine. Tetrahedron 48 (39) : 8541-8544. ScholarBank@NUS Repository. https://doi.org/10.1016/S0040-4020(01)86601-1|
|Abstract:||(6S,7S,8R,8aR)-6,7,8-Trihydroxyindolizidine (i) and its (7R)-deoxyfluoro analogue (2) was synthesised from 5,8-benzyloxycarbonylimino-5,6,7,8-tetradeoxy-1,2-O-isopropylidene- α-D-gluco-octose (3). The key step is an oxidation-reduction sequence. Introduction of a fluoro substituent at C-3 (6) was readily effected by displacement of the 3-trifluoromethanesulfonyl (triflate) group with tris-(dimethylamino)-sulfonium-difluorotrimethylsilicate (TASF).|
|Appears in Collections:||Staff Publications|
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