Synthesis of (±)-10,10-dimethylhuperzine A — a huperzine analogue possessing a slower enzyme off-rate
摘要:
The synthesis of (+/-)-10,10-dimethylhuperzine A is reported together with its kinetic (k(on) and k(off)) and dissociation constants for the inhibition of fetal bovine serum acetylcholinesterase. While somewhat more potent than (+/-)-huperzine A, the dimethyl analogue shows a slower off-rate from AChE, a result that may be of potential therapeutic value.
Synthesis of (±)-10,10-dimethylhuperzine A — a huperzine analogue possessing a slower enzyme off-rate
作者:Alan P. Kozikowski、Qingjie Ding、Ashima Saxena、Bhupendra P. Doctor
DOI:10.1016/0960-894x(96)00012-1
日期:1996.2
The synthesis of (+/-)-10,10-dimethylhuperzine A is reported together with its kinetic (k(on) and k(off)) and dissociation constants for the inhibition of fetal bovine serum acetylcholinesterase. While somewhat more potent than (+/-)-huperzine A, the dimethyl analogue shows a slower off-rate from AChE, a result that may be of potential therapeutic value.
Synthesis, chiral chromatographic separation, and biological activities of the enantiomers of 10,10-dimethylhuperzine A
作者:V Rajendran、K.R.C Prakash、Haresh S Ved、Ashima Saxena、Bhupendra P Doctor、Alan P Kozikowski
DOI:10.1016/s0960-894x(00)00494-7
日期:2000.11
(+/-)-10,10-Dimethylhuperzine A (2, DMHA) has been synthesized, and its enantiomers have been separated using chiral HPLC. (-)-DMHA inhibits AChE with a K-i value approaching that of (-)-huperzine A, whereas (+)-DMHA shows no AChE inhibitory activity. On the other hand, both enantiomers are equally potent against glutamate-induced neurotoxicity when tested in neurons. (C) 2000 Elsevier Science Ltd. All rights reserved.