Sungki Cho Yeo Hong Yoon Koun H. Lee Seung-Ho Ahn 김충섭 2024-01-21T22:39:33Z 2024-01-21T22:39:33Z 2022-01-10 1993-01 https://pubs.kist.re.kr/handle/201004/146159 Synthesis and biological activity of 3-(dioxopiperazinylcarboxamido) pyridinium-methyl cephalosporins. Article 3 Korean j. of med. chem., v.v. 3, no.no. 1, pp.20 - 24 Korean j. of med. chem. v. 3 no. 1 20 24 synthesis biological activity