Chiral Ligands Derived from Carbohydrates.21. Crystal Structure of Methyl-4,6-O-benzylidene-3-deoxy-

• 作 者: 刘沛 贾莉 童庆松 孟祥华 冯延芳 施继成
• 机 构: College of Chemistry and Materials Science,Fujian Normal University,
• 出 处: 结构化学
• 发表日期: 2008年09期
• 关键词: deoxy methanol chair belongs carbohydrate chiral conformation Schiff reacting or

A new chiral Schiff base derived from carbohydrate,methyl-4,6-O-benzylidene-3-deoxy-3-(salicylideneamino)-α-D-altropyranoside,has been synthesized by reacting methyl 3-ami-no-4,6-O-benzylidene-3-deoxy-α-D-altropyranoside with salicylaldehyde in methanol and charac-terized by IR,1H NMR,13C NMR,MS,elemental analysis,and X-ray crystal structure analysis.The crystal belongs to orthorhombic,space group P212121 with a = 8.0856(16),b = 10.786(2),c = 22.690(5),V = 1978.8(7) 3,Z = 4,Mr = 385.40,Dc = 1.294 g/cm3,μ = 0.095 mm-1,F(000) = 816,the final R = 0.0379 and wR = 0.0811 for 2597 independent reflections.In the title compound,the pyrano-ring adopts a twisted 1C4 chair conformation.

A new chiral Schiff base derived from carbohydrate, methyl-4,6-O-benzylidene-3-deoxy-3- (salicylideneamino) -α-D-altropyranoside, has been synthesized by reacting methyl 3-ami-no- -O-benzylidene-3-deoxy-α-D-altropyranoside with methanol and charac-terized by IR, 1H NMR, 13C NMR, MS, elemental analysis, and X-ray crystal structure analysis. The crystal belongs to orthorhombic, space group P212121 with a = 8.0856 (16), b = 10.786 (2), c = 22.690 (5) , V = 1978.8 (7) 3, Z = 4, Mr = 385.40, Dc = 1.294 g / cm3, μ = 0.095 mm-1, F (000) = 816, the final R = 0.0379 and wR = 0.0811 for 2597 independent reflections. The title compound, the pyrano-ring adopted a twisted 1C4 chair conformation.