Scale-up syntheses of two naturally occurring procyanidins: (−)-epicatechin-(4β → 8)-(+)-catechin and (−)-epicatechin-3-O-galloyl-(4β → 8)-(−)epicatechin-3-O-gallate. - Sharma,P.K.; Kolchinski,A.P.; Shea,H.A.; Nair,J.J.; Gou,Y.; Romanczyk,L.J.; Schmitz,H.H. (Org Process Res Dev, 2007)