
%0 Journal Article
%A Byrne, LT 
%A Sasse, JM 
%A Skelton, BW 
%A Suksamrarn, A 
%A White, AH 
%T The Minor Iridoid Glucosides of <I>Barleria lupulina</I>: Isolation, Crystal Structure and Plant Growth-Inhibiting Properties of 6-O-Acetylshanzhiside Methyl Ester
%J Australian Journal of Chemistry
%D 1987/05/01
%V 40
%N 5
%P 785-794
%K 
%R https://doi.org/10.1071/CH9870785
%U https://www.publish.csiro.au/paper/CH9870785 
%X The minor iridoid  glucosides present in the aerial parts of Barleria lupulina Lindl. ( Acanthaceae ) have been identified as ipolamiidoside (7) and the new compound 6-O-acetylshanzhiside methyl ester (3). The structure of (3) was determined by spectroscopic and chemical methods, and was confirmed by a single-crystal X-ray structure determination. Crystals of (3) are orthorhombic P212121, a 43.75(1), b 8.151(3), c 5.695(2) Å, Z 4. The crystal structure was determined at 295 K from diffractometer data [I528 reflections with I > 3&#963;(I)] and refined to a residual of 0.043. Shanzhiside methyl ester (1) and its 6-Oacetyl (3), 8-Oacetyl (2) and 6,8-O,O-diacetyl (4) derivatives, all of which occur in Barleria lupulina, have been found to inhibit the growth of wheat embryos. 
