摘要:
The invention relates to a process for the production of perbenzylated 1-O-glycosides of general formula I or salts thereof in which sugar1 is a monosaccharide that is functionalized in 1-OH-position, R represents benzyl, n means 2, 3 or 4, X means —COO— or —NH— and L means a straight-chain, branched, saturated or unsaturated C1-C30 carbon chain, which optionally is interrupted or substituted by groups. The process according to the invention starts from economical starting materials, provides good yields and allows the production of perbenzylated saccharides with 1-O-functionalized side chains on an industrial scale.
摘要:
The invention relates to a process for the production of peracylated 1-O-glycosides of general formula I or salts thereof in which sugar1 is a monosaccharide that is functionalized in 1-OH-position, R represents methyl, ethyl, propyl, isopropyl, tbutyl, phenyl, n means 2, 3 or 4, X means —COO— or —NH—and L means a straight-chain, branched, saturated or unsaturated C1-C30 carbon chain, which optionally is interrupted or substituted by groups. The process according to the invention starts from economical starting materials, provides good yields and allows the production of peracylated saccharides with 1-O-functionalized side chains on an enlarged scale.
摘要:
The invention relates to a new synthetic process for the production of key intermediates useful in the synthesis of epothilones or epothilone derivatives, to certain compounds used to produce these key intermediates and to a process to produce said compounds.
摘要:
The invention relates to a process for the production of metal-complex carboxylic acid amides, characterized in that a metal-complex carboxylic acid mixture that consists of the metal-complex carboxylic acid and at least one solubilizing substance in dimethyl sulfoxide (DMSO) is pretreated with a dehydrating reagent, optionally with the addition of a coupling adjuvant, and is then reacted with an amine of general formula IA(NH.sub.2).sub.n (I),in whichA stands for the radical of a natural or synthetic amine, andn stands for numbers 1 to 100.
摘要:
The invention relates to the use of perfluoroalkyl-containing metal complexes that have a critical micelle formation concentration 1 nm and a proton relaxivity in plasma (R1)>10 l/mmol·s as contrast media in MR imaging for visualization of intravascular thrombi.
摘要:
A new process for the production of triiodotrimesic acid that is used as an intermediate product for the synthesis of x-ray contrast media is described.
摘要:
Oligomeric compounds that contain perfluoroalkyl of general formula IA--R.sup.F (I)in whichA is a molecule portion that contains 2-6 metal complexes that are connected directly or via a linker to a nitrogen atom of an annular skeleton chain, andR.sup.F is a perfluorinated, straight-chain or branched carbon chain with formula --C.sub.n F.sub.2n E, in which E represents a terminal fluorine, chlorine, bromine, iodine, or hydrogen atom and n stands for numbers 4-30,are valuable compounds for diagnosis, especially as in-vivo contrast media.