New Neplanocin Analogues. 12. Alternative Synthesis and Antimalarial Effect of (6‘<i>R</i>)-6‘-<i>C</i>-Methylneplanocin A, a Potent AdoHcy Hydrolase Inhibitor
作者:Satoshi Shuto、Noriaki Minakawa、Satoshi Niizuma、Hye-Sook Kim、Yusuke Wataya、Akira Matsuda
DOI:10.1021/jm010374i
日期:2002.1.1
An improved method for the synthesis of (6'R)-6'-C-methylneplanocin A (RMNPA, 2), a potent S-adenosyl-L-homocysteine (AdoHcy) hydrolase inhibitor, was developed via a chelation-controlled stereoselective addition of MeTiCl3 to the neplanocin A 6'-aldehyde derivative 6. Compound 2 effectively inhibited the growth of malaria parasites both in vitro and in vivo. The antimalarial EC50 value of 2 against Plasmodium berghei in mice was 1.0 mg/kg/day, which was superior to that of chloroquine (EC50 = 1.8 mg/kg/day).