Pinifolin, ein neues Iridoidglucosid ungewöhnlichen Typs aus Penstemon pinifolius

Abstract

From the aerial parts of Penstemon pinifolius Greene, a new iridoid glucoside of unusual type has been isolated and structurally elucidated by spectroscopic means. This new compound, called pinifolin, contains a Δ⁴-instead of a Δ³-double bond and a methyl ether function at carbon 3 of the iridoidic skeleton.