Stereoselective synthesis of polyoxygenated linear diaza-triquinanes via intramolecular 1,3-dipolar cycloaddition of sugar-derived hex-5-enals
摘要:
An efficient and stereoselective synthesis of diaza-triquinanes, the skeleton structures of many natural products, has been accomplished by intramolecular 1,3-dipolar cycloaddition of azomethine imine generated from sugar-derived hex-5-enal and pyrazolidin-3-one. (C) 2011 Elsevier Ltd. All rights reserved.
Stereoselective synthesis of polyoxygenated linear diaza-triquinanes via intramolecular 1,3-dipolar cycloaddition of sugar-derived hex-5-enals
摘要:
An efficient and stereoselective synthesis of diaza-triquinanes, the skeleton structures of many natural products, has been accomplished by intramolecular 1,3-dipolar cycloaddition of azomethine imine generated from sugar-derived hex-5-enal and pyrazolidin-3-one. (C) 2011 Elsevier Ltd. All rights reserved.
Stereoselective synthesis of polyoxygenated linear diaza-triquinanes via intramolecular 1,3-dipolar cycloaddition of sugar-derived hex-5-enals
作者:Yunfeng Li、Yao Meng、Xiangbao Meng、Zhongjun Li
DOI:10.1016/j.tet.2011.04.031
日期:2011.6
An efficient and stereoselective synthesis of diaza-triquinanes, the skeleton structures of many natural products, has been accomplished by intramolecular 1,3-dipolar cycloaddition of azomethine imine generated from sugar-derived hex-5-enal and pyrazolidin-3-one. (C) 2011 Elsevier Ltd. All rights reserved.
Stereoselective and regioselective one-pot synthesis of polyhydroxy bicyclic diazenes and hydrazones from methyl 6-deoxy-6-iodo-hexosides
作者:Yunfeng Li、Yao Meng、Zhongjun Li、Xiangbao Meng
DOI:10.1016/j.tet.2015.05.105
日期:2015.8
An efficient, stereoselective, and base-controlled procedure for the preparation of polyhydroxy bicyclic diazenes and polyhydroxy bicyclic hydrazones is described, starting from sugar-derived methyl 6-deoxy6-iodo-hexosides. The one-pot synthesis involves a three-step reaction, including ring-opening, condensation with tosylhydrazine, and intramolecular cycloaddition with terminal alkene, which affords important synthetic precursors of bicyclic diazenes and hydrazones. (C) 2015 Elsevier Ltd. All rights reserved.