Convergent synthesis of stereoisomers of THF ring moiety of acetogenin thiophene analogue and their antiproliferative activities against human cancer cell lines
The convergent synthesis of thiophene-3-carboxamide analogues of annonaceous acetogenins was accomplished through the asymmetric alkynylation of a 2-formyl THF ring fragment with an alkyne having a thiophene ring as the key step. Eight stereoisomers of the THF ring moiety were synthesized by this convergent route and their antiproliferativeactivitiesagainst 39 human cancer cell lines were evaluated