نتایج جستجو برای: 2 dioxolane
تعداد نتایج: 2525406 فیلتر نتایج به سال:
Two new azaphilone derivatives containing 1,3-dioxolane moiety, penidioxolanes A (1) and B (2), were isolated from marine-derived fungus Penicillium sp. KCB12C078, together with four known compounds (36) by chemical investigation. Compounds 1 6 were isolated by combination of silica gel, ODS column chromatography and preparative HPLC. Their structures were determined by analysis of spectroscopi...
2-Methylene-4-phenyl-1,3-dioxolane (MPDL) was successfully used as a controlling comonomer in NMP with oligo(ethylene glycol) methyl ether methacrylate (MeOEGMA) to prepare well-defined and degradable PEG-based P(MeOEGMA-co-MPDL) copolymers. The level of ester group incorporation is controlled, leading to reductions in molecular weight of up to 95% on hydrolysis. Neither the polymer nor its deg...
In the title mol-ecule, C(13)H(15)N(3)O(2), the dihedral angle between the mean plane of the 1,3-dioxolane group and the 2-hydrazino-7-methyl-isoquinoline unit is 85.21 (5)°. The conformation of the mol-ecule is influenced by bifurcated N-H⋯(O,O) and N-H⋯N intra-molecular hydrogen bonds. In the crystal structure, mol-ecules are linked via inter-molecular N-H⋯O hydrogen bonds, forming extended c...
Published Ahead of Print 2 July 2007. 10.1128/AAC.00325-07. 2007, 51(9):3177. DOI: Antimicrob. Agents Chemother. Bud C. Tennant Schinazi, Chung K. Chu, Paul J. Cote, John L. Gerin and F. D. Butler, Andrea L. George, Selwyn J. Hurwitz, Raymond Stephan Menne, Ghazia Asif, Jannan Narayanasamy, Scott Hepatitis Virus Infection Woodchucks with Chronic Woodchuck -d-2-Aminopurine Dioxolane in β )− Anti...
A number of 3-alkoxy-1,2-dioxolanes exhibit promising levels of antimalarial activity against P. falciparum. A new route to the 1,2-dioxolane core is reported based on tandem peroxidation/cyclization of enones.
Polyesters are important materials with a wide range of applications, but there has been increasing concern over their sustainability. One example is the need for safer, bio-derived solvents to replace those currently in use polymer’s synthesis and processing. In this work, several variants bio-based cellulose/levoglucosenone derived solvent Cyrene, namely ketal derivatives dioxolane Cygnet, di...
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