Isolation and Structure Elucidation of Two Highly Acylated Iridoid Diglycosides from Scrophularia scopolii

Two new triacyl iridoid diglycosides, named scropolioside A and B ( 1 and 2), have been isolated from the roots of SCROPHULARIA SCOPOLII var. SCOPOLII. Their structures were elucidated on the basis of chemical and spectral data as 6- O-(2'', 4''-di- O-acetyl-3''- O- P-methoxy- TRANS-cinnamoyl)-alpha- L-rhamnopyranosylcatalpol ( 1) and 6- O-(2''- O-acetyl-3'', 4''- O-di- TRANS-cinnamoyl)-alpha- L-rhamnopyranosylcatalpol ( 2).