The synthesis of a series of euphorbioside derivatives is described, starting from euphorbioside isolated from fresh latex of Euphorbia resinifera Berg. Their structures have been established on the basis of spectral data. All compounds were evaluated for antibacterial activities against Escherichia coli and Staphyloccus aureus strains and antifungal activity against Candida albicans and Asperg...

Lawrence et al (4) identified the red pigment in bracts of poinsettia as an anthocyanin. The methods employed served to identify the principal anthocyanidin (cyanidin), but not the sugar moiety. Blank (2), Robinson and Robinson (5, 6, 7), and Scott-'Moncrieff (8) reported that variation in the sugar moiety of the anthocyanin pigment affected color. They found that monoglycosides were redder tha...

Three new myrsinol diterpenes were isolated from the roots of Euphorbia prolifera. Their structures were elucidated as 2α-O-isobutyryl-3β,5α,7β,10,15β-penta-O-acetyl-14α-O-benzoyl-10,18-dihydromyrsinol (1), 2α-O-isobutyryl-3β-O-propion-yl-5α,7β,10,15β-tetra-O-acetyl-10,18-dihydromyrsinol (2), and 2α,14α-di-O-benzoyl-3β,5α,7β,10,15β-penta-O-acetyl-10,18-dihydromyrsinol (3) on the basis of spectr...