Studies on Medicinal Resources. XXXIII. The Components of Rhizome of Iris tectorum MAXIMOWICZ (Iridaceae). (2)

Abstract

The presence of two unknown compounds, now named iristectorin B (II_B) and tectoruside (IV), in the rhizome of Iris tectorum Maximowicz (Iridaceae) was reported in a previous paper¹⁾ and their nature was examined in the present series of work. The aglycone of iristectorin B (named iristectorigenin B), C₁₇H₁₄O₇, mp 153-155°, colorless microneedles, was assumed to be 5, 7, 4'-trihydroxy-6, 3'-dimethoxyisoflavone, and tectoruside, C₂₁H₃₀O₁₃H₂O, mp 207-209°, colorless microneedles, was assumed to be acetovanillone-β-D-diglucoside.