A New Approach to Nicotine: Symmetry Consideration for Synthesis Design
作者:Tse-Lok Ho、Eugene?V. Kuzakov
DOI:10.1002/hlca.200490241
日期:2004.10
A synthesis of nicotyrine (9), and hence formally racemic nicotine, was carried out by elaboration of the 1 : 1 adduct 2 of cycloocta-1,5-diene and chlorosulfonyl isocyanate (ClSO2NCO). Transformation of adduct 2 into carbamate 4 was followed by ozonolysis, tosylation, and NaH treatment, which led to pyrrolidinylpiperidinone 6. LiAlH4 Reduction, debenzylation, and aromatization yielded 2.
A series of bicyclic N-substituted and unsubstituted beta-lactams were synthesized and evaluated as targeted potential antimalarials. The compounds MNR4 and MNR5 were found to have highest potency against Plasmodium falciparum in vitro. (c) 2005 Elsevier Ltd. All rights reserved.