摘要:
The invention relates to synthesis methods for the preparation of statin derivatives, which methods proceed by way of a key intermediate of formula I wherein X is halogen, acyloxy, activated hydrocarbyloxy, activated hydrocarbylthio or N(CH3)OCH3, Ra is a hydroxy-protecting group, and Rb is a carboxy-protecting group, and, as well as to the compound of formula I, to further intermediates and methods for their preparation by Friedel-Crafts acylation.
摘要翻译:本发明涉及用于制备他汀类衍生物的合成方法,该方法通过式I的关键中间体进行,其中X是卤素,酰氧基,活化的烃氧基,活化的烃基硫基或N(CH 3) OCH 3,R a是羟基保护基,R b是羧基保护基,以及对于 式I化合物,其进一步的中间体及其通过Friedel-Crafts酰化制备的方法。
摘要:
The invention relates to novel synthesis methods for the preparation of statin derivatives, which methods proceed by way of a key intermediate of formula I wherein X is halogen, acyloxy, activated hydrocarbyloxy, activated hydrocarbylthio or —N(CH3)OCH3, Ra is a hydroxy-protecting group and Rb is a carboxy-protecting group, and, as well as to the compound of formula I, to further new intermediates and methods for their preparation by Friedel-Crafts acylation.
摘要:
The invention relates to novel synthesis methods for the preparation of statin derivatives, which methods proceed by way of a key intermediate of formula I wherein X is halogen, acyloxy, activated hydrocarbyloxy, activated hydrocarbylthio or —N(CH3)OCH3, Ra is a hydroxy-protecting group and Rb is a carboxy-protecting group, and, as well as to the compound of formula I, to further new intermediates and methods for their preparation by Friedel-Crafts acylation.
摘要:
The invention relates to novel synthesis methods for the preparation of statin derivatives, which methods proceed by way of a key intermediate of formula I wherein X is halogen, acyloxy, activated hydrocarbyloxy, activated hydrocarbylthio or —N(CH3)OCH3, Ra is a hydroxy-protecting group and Rb is a carboxy-protecting group, and, as well as to the compound of formula I, to further new intermediates and methods for their preparation by Friedel-Crafts acylation.
摘要:
A process for the preparation of compounds of formula (I) wherein R1 is unsubstituted or substituted C1-C8alkyl, R2, R3, R4 and R5 are each independently of the others hydrogen, unsubstituted or substituted C1-C8alkyl, C1-C8 alkoxy, phenoxy or benzyloxy, or halogen, Y1 and Y2 are each independently of the other hydrogen or a protecting group, or Y1 and Y2 together form a protecting bridge, and X1 is hydrogen, an organic radical or a cation, in which process a compound of formula (II) wherein R1 R2, R3, R4 and R5 are as defined above and Z1 is a leaving group, is reacted, in the presence of a catalytically effective amount of a palladium catalyst, with a compound of formula (III) wherein R6 is hydrogen, bromine, chlorine, iodine, —OSO2CF3, —COCI, —B(OH)2 or a mono- or di-ester derived from —B(OH)2, Y3 and Y4 are each a protecting group, or Y3 and Y4 together form a protecting bridge, and X1 is as defined above, to form a compound of formula (IV) and if desired the radicals Y3 and Y4 are converted into the radicals Y1 and Y2 where Y1 and Y2 are hydrogen.