Jindal, D.P. and Piplani, P. and Fajrak, H. and Prior, C.B. and Marshall, I.G. (2003) Synthesis and biological evaluation of 16beta pyrrolidinosteroidal derivatives. Arzneimittel Forschung, 53 (2). pp. 73-79. ISSN 0004-4172Full text not available in this repository. (Request a copy from the Strathclyde author)
The synthesis of some steroidal bisquaternary ammonium substances (compounds 10 and 11), and their in vitro and in vivo neuromuscular blocking action are described in this report. The pyrrolidino functionality was incorporated at both the 3-beta and 16-beta positions of the steroid nucleus to study the importance of the interonium distance between the two quaternary ammonium heads. The 16-beta-pyrrolidino monoquaternary derivatives (compounds 14, 15, 16) were also prepared. The 17-beta-acetoxy bisquaternary derivative compound 11 was found to be more potent than d-tubocurarine (CAS 57-94-3) in in vivo studies. The 17-beta-hydroxy bisquaternary derivative, compound 10, and its 16-beta-pyrrolidino monoquaternary partner, compound 15, were found to be less active as compared to d-tubocurarine in in vitro studies. The monoquaternary compounds 14 and 16 were not tested due to their solubility problems. The intermediate substance, compound 12 was selected by the National Cancer Institute (NCI), Bethesda (USA) for investigation for antineoplastic activity but was found to be inactive.
|Keywords:||biological evaluation , 16beta pyrrolidinosteroidal derivatives , ammonium substances , antineoplastic activity, Pharmacy and materia medica, Drug Discovery|
|Subjects:||Medicine > Pharmacy and materia medica|
|Department:||Faculty of Science > Strathclyde Institute of Pharmacy and Biomedical Sciences|
|Depositing user:||Pure Administrator|
|Date Deposited:||12 Mar 2012 14:51|
|Last modified:||29 Apr 2016 00:45|