摘要:
2-substituted 5-formylthiazoles are prepared in an advantageous manner by reacting halogenomalonaldehydes in the presence of a solvent and a C1-compound of the formula (III) in which X represents oxygen or sulfur and R1 is as defined in the description, the reaction mixture comprising less than 5% by weight of water.
摘要:
The present invention provides a process for the preparation of 4-methyl-5-formyl-thiazole of the formula (I) which comprises reducing the thiazole ester of the formula (III) to thiazole alcohol of the formula (IV), using sodium borohydride in the presence of AlCl3 in a solvent and oxidising using an oxidizing agent the thiazole alcohol of the formula (IV) to obtain 4-methyl-5-formyl-thiazole of the formula (I).
摘要:
The present invention relates to compositions and methods for reversing advanced glycosylation end product-mediated cross-linking and protein aging. Accordingly, compositions are described which comprise thiazolium compounds substituted with heterocyclic groups which are capable of reversing the formation of advanced glycosylation end product cross-links. Both industrial and therapeutic applications for the invention are disclosed, as food spoilage and animal protein aging can be treated. Such compounds have particular application in the treatment of protein aging such as is responsible for the complications of aging and diabetes.
摘要:
The present invention provides compounds of formula (I) wherein R1 to R10, X, Y and n are indicated in the specification, and pharmaceutically acceptable salts and esters thereof. The compounds are useful for the treatment of non-insulin dependent diabetes mellitus.
摘要:
Provided is a method of synthesizing a compound of formula I, comprising: (a) reacting a compound of formula II wherein R1 and R2 are independently hydrogen, hydroxy(C1-C2)alkyl, or (C1-C2)alkyl with, a compound of formula III wherein R3, R4, and R5 are each independently of each other hydrogen, (C1-C3)alkyl, (C1-C3)alkoxy, or halogen; and X is a leaving group, in a solvent having a dielectric constant at 20° C. of at least 30 but no more than 40; and (b) obtaining the compound I.