摘要:
An optically active spirolactone compound is highly enantioselectively produced by using an iodoarene derivative which can be synthesized easily and which is not racemized easily. A hypervalent iodine compound precursor (iodoarene derivative) which was able to be designed flexibly was synthesized from 2,6-dihydroxyiodoarene by using 1,2-aminoalcohol as a chiral source in short steps, a hypervalent iodine compound was prepared in a reaction system (in situ) by using a catalyst quantity of the resulting precursor in the presence of a stoichiometric quantity of m-CPBA, and a spirolactonization reaction of 3-(1-hydroxy-2-naphthyl)propionic acid was induced. As a result, a corresponding spirolactone compound was obtained at a high enantiomeric excess.
摘要:
The present invention provides compositions comprising polytheylyene-dialkyloxypropyl conjugates (PEG-DAA), liposomes, SNALP, and SPLP comprising such compositions, and methods of using such compositions, liposomes, SNALP, and SPLP.
摘要:
The present invention provides novel cycloalkylmethylamine analogs, and methods of preparing cycloalkylmethylamine analogs. The present invention also provides methods of using cycloalkylmethylamine analogs and compositions of cycloalkylmethylamine analogs. The pharmaceutical compositions of the compounds of the present invention can be advantageously used for treating and/or preventing obesity and obesity related co-morbid indications.
摘要:
The present invention relates to compositions comprising certain active compounds which are suitable as repellents, and to their use for preventing an infection of humans or of animals by the infectious states of parasitic flatworms (platyhelminths).
摘要:
The present invention relates to a compound comprising a peptide moiety, a spacer moiety and a water-soluble polymer moiety such as a poly(ethylene glycol) moiety. The spacer moiety is between the peptide moiety and the water-soluble polymer moiety. The spacer moiety has the structure: —NH—(CH2)α—[O—(CH2)β]γ—Oδ—(CH2)ε—Y— wherein α, β, γ, δ, and ε are each integers whose values are independently selected.
摘要:
Novel spatially-defined macrocyclic compounds containing specific conformational control elements are disclosed. Libraries of these macrocycles are then used to select one or more macrocycle species that exhibit a specific interaction with a particular biological target. In particular, compounds according to the invention are disclosed as agonists or antagonists of a mammalian motilin receptor and a mammalian ghrelin receptor.
摘要:
New nitrogen-containing compounds are provided that comprise multiple hydroxyl moieties and photoresist compositions that comprise such nitrogen-containing compounds. Preferred nitrogen-containing compounds comprise 1) multiple hydroxyl substituents (i.e. 2 or more) and 2) one or more photoacid-labile groups.
摘要:
Disclosed herein are non-natural amino acids and polypeptides that include at least one non-natural amino acid, and methods for making such non-natural amino acids and polypeptides. The non-natural amino acids, by themselves or as a part of a polypeptide, can include a wide range of possible functionalities, but typical have at least one oxime, carbonyl, dicarbonyl, and/or hydroxylamine group. Also disclosed herein are non-natural amino acid polypeptides that are further modified post-translationally, methods for effecting such modifications, and methods for purifying such polypeptides. Typically, the modified non-natural amino acid polypeptides include at least one oxime, carbonyl, dicarbonyl, and/or hydroxylamine group. Further disclosed are methods for using such non-natural amino acid polypeptides and modified non-natural amino acid polypeptides, including therapeutic, diagnostic, and other biotechnology uses.
摘要:
The present invention provides a method for synthesizing 1-(acyloxy)-alkyl derivatives from 1-acyl-alkyl derivatives, which typically proceeds stereospecifically, in high yield, does not require the use of activated intermediates and/or toxic compounds and is readily amendable to scale-up. The current invention also provides 1-acyl-alkyl derivatives of known drug components and methods for synthesizing these 1-acyl-alkyl derivatives.
摘要:
The present invention provides a novel method for preparing a key intermediate, 3-amino-pentan-1,5-diol (2), which is useful for the preparation of 6-(2,4-difluorophenoxy)-2-[3-hydroxy-1-(2-hydroxyethyl)-propylamino]-8-methyl-8H-pyrido[2,3-d]pyrimidine-7-one (1) a MAP-kinase inhibitor useful in the treatment of rheumatoid arthritis.