Anh chị download dùm em bài báo này nha! Em cảm ơn ah! Title: A Novel and Efficient Synthesis of (6R,7R)-7-Amino-3-hydroxymethyl Cephalosporanic Acid: A Versatile Precursor of Cefuroxime Acid Authors: Santosh Kumar Singha; R. P. Tiwari; Praveen Jainb Journal: Synthetic Communications Issue: Issue 14 Year of publish: 2003 Page: 2475 - 2482 Direct link đến abstract: http://www.informaworld.com/smpp/35861577-…5~frm=titlelink