220587-69-9Relevant academic research and scientific papers
Preparation of α-(2,2-diphenylhydrazino)- and α-(benzyloxyamino)-lactones by radical cyclization: Use of glyoxylic acid diphenylhydrazone and glyoxylic acid 0-benzyloxime
Clive, Derrick L. J.,Zhang, Junhu
, p. 549 - 550 (1997)
Glyoxylic acid diphenylhydrazone (2, Y = NPh2) and the corresponding O-benzyloxime (2, Y = OBn) are easily esterified in high yield by β-bromo alcohols, and the resulting esters undergo radical cyclization to α-(2,2-diphenylhydrazino) or α-(ben
Synthesis of C-glycosyl lactones and protected C-glycosyl amino acids: Use of radical cyclization
Zhang, Junhu,Clive, Derrick L. J.
, p. 770 - 779 (2007/10/03)
Protected carbohydrates 6a-13a, having one free hydroxyl and a phenylseleno group or halogen on the adjacent carbon, were condensed with (2,2-diphenylhydrazono)acetic acid (2); the resulting esters undergo radical cyclization to afford carbohydrates fused to a 2,2-diphenylhydrazino lactone unit (6c,d-13c,d). In suitable cases (9c,d) such carbohydrate lactones can be elaborated into C-glycosyl amino acids.
