Four new (1 - 4) and one known (5) acylated iridoid glycosides were isolated from the aerial parts of Veronicastrum sibiricum (L.) Pennell. The chemical structures of the isolated compounds were determined to be 3″,4″-dicinnamoyl-6-O-rhamnopyranosyl-10-O-bergaptol-5,7-bisdeoxycynanchoside (1),