The biologically active title compounds have been isolated from Hibiscus sabdariffa plants, hibiscus acid as a dimethyl sulfoxide monosolvate [systematic name: (2S,3R)-3-hy-droxy-5-oxo-2,3,4,5-tetra-hydro-furan-2,3-di-carb-oxy-lic acid dimethyl sulfoxide monosolvate], C6H6O7·C2H6OS, (I), and hibiscus acid dimethyl ester [systematic name: dimethyl (2S,3R)-3-hy-droxy-5-oxo-2,3,4,5-tetra-hydro-fur...

Twenty-one variant clones of Friend erythroleukemia cell were isolated and characterized. Seventeen clones were resistant to induction of hemoglobin synthesis by one of eight drugs that have been reported to induce erythroid differentiation in clone 745. Four clones re sponded hypersensitively to dimethyl sulfoxide or hypoxanthine. The variant clones were treated with inducing drugs to determin...

The effects of diphenylamine, dimethyl sulfoxide, streptomycin, AMO-1618, and beta-ionone on the carotene composition of a wild-type and three mutant strains of Phycomyces blakesleeanus have been examined. Diphenylamine increased the phytoene and phytofluene concentrations of all strains while reducing the levels of the color carotenes. Dimethyl sulfoxide reduced the concentration of both cycli...

This work succeeded in synthesizing sponges from chitosan-graft-maleic anhydride. Chitosan and maleic anhydride at a certain mass ratio (1:2, 1:1; 2:1) were reacted dimethyl sulfoxide (DMSO) 60

The asymmetric unit of the title compound, C(12)H(10)N(4)O(2)S(4)·2C(2)H(6)OS, contains one half of the p-xylene mol-ecule and one dimethyl sulfoxide mol-ecule. The p-xylene mol-ecule is located about a crystallographic inversion centre. In the mol-ecule, the thia-diazole and benzene rings are almost perpendicular to one another, with a dihedral angle of 88.95 (6)°. In the crystal, an N-H⋯O hyd...

The RNA synthesis of human leukemic leukocytes and phytohemagglutinin-stimulated lymphocytes is markedly reduced by administration of a low-molecular-weight nonhistone peptide factor from calf thymus. Treatment with the factor strongly inhibits hemoglobin production and globin mRNA transcription in dimethyl sulfoxide-stimulated Friend cells without appreciably modifying the rate of cell growth....