A One-pot Synthesis of Cyclic Pyrido[1,2-a]quinoxaline Phosphate,a New Molecule of Biological Importance from a Quinoxaline Derivative of Sugar

摘要

A five membered cyclic pyrido[1,2-a]quinoxaline phosphate has been first synthesized in one step in a good yield by phosphorylation of the quinoxaline derivative of sugar 1a with (PhO)P(O)Cl_2.Phosphorylation f the tetrols (1a and 1b) and the diol acetals with other phosporylating agents,however,affords a dehydration product 2-(2-furyl)quinoxaline.