A practical stereoselectivetotalsynthesis of (3R,5R)-5-hydroxy-de-O-methyllasiodiplodin has been accomplished viaPrinscyclization. It exhibits potato microtuber inducing activity. The synthetic sequence involves Prinscyclization, reductive opening of the pyran ring, esterification, and ring-closing metathesis (RCM) as the key steps. Prinscyclization - ring-closing metathesis - esterification
The firsttotalsynthesis of (3R),(5R)-5-hydroxy-de-O-methyllasiodiplodin and itsepimer is reported from malic acid. The adopted approach is highly convergent and stereoselective. The strategy utilizes syn selective reduction and ring-closing metathesis as key steps.