Efficient sythesis and biological evaluation of ω-oxygenated analogues of vitamin K2:: Study of modification and structure-activity relationship of vitamin K2 metabolites

Novel omega-oxygenated vitamin K-2 analogues, which are candidates for metabolites of vitamin K-2 homologues, were efficiently synthesized and their apoptosis-inducing activity was evaluated. We revealed that some of those analogues were biologically active and the side-chain part played an important role in apoptosis-inducing activity. Our results can provide useful information to develop the structure-activity relationship of vitamin K-2 analogues for new drugs based on vitamin K. (c) 2007 Elsevier Ltd. All rights reserved.