Citation:
	            
		            Zhang Pingzhu, Liu Huan, Wei Xiao, Ma Chen, Wang Qiwei, Li Xiaoliu. Synthesis of C-Glycosides Ribosyl-Acid and Ribosyl-Aldehyde[J]. Chinese Journal of Organic Chemistry,
							;2016, 36(7): 1690-1695.
						
							doi:
								10.6023/cjoc201602003
						
					
				
					 
				
	        
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	                	For exploring a simple and efficient synthetic method of C-glycosides, (2, 3-O-isopropylidene)-β-C-D-ribosyl ethyl acetate and (2, 3-O-isopropylidene)-β-C-D-ribosyl acetic acid were stereospecifically synthesized by a one-pot tandem Wittig-Michael addition reaction, and then treated with corresponding base, respectively. The acetates were reduced by DIBAL-H to obtain the corresponding glycosyl aldehyde. D-xylose was treated following the procedure of acetonide of 1, 2-position, trifluoroacetoxyation of 3, 5-position. The trifluoroacetoxyl groups were substituted by azido groups, followed by the one-pot tandem Wittig-Michael addition reaction, and then treated with corresponding base. 3, 5-Diazido-β-C-D-ribosyl acetic acid was obtained in high stereo specificity.- 
								Keywords:
								
- C-glycosides,
- Wittig-Michael addition,
- ribosyl-acid,
- aldehyde,
- azides
 
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