Reagents and methods for the beta-keto amide synthesis of a...

Details Reagents and methods for the beta-keto amide synthesis of a... Reagents and methods for the beta-keto amide synthesis of a...

2011-04-05

2011-04-05

Anderson, Rebecca L (Department: 1626)

Organic compounds -- part of the class 532-570 series

Organic compounds

Phosphorus esters

C558S171000

Reexamination Certificate

active

07919643

ABSTRACT:
This invention relates to the synthesis for a precursor of E6020, compound 26, via a β-keto amide alcohol intermediate, compound 22. The synthesis reacts compound 22 with compound 25 and the resultant intermediate is oxidized to produce compound 26, the precursor to E6020. Compounds 22 and 25, and their crystalline forms, represent separate embodiments of the invention. The invention also relates to compounds of formulas (3) and (4) and processes for their preparation.The β-keto amide alcohol intermediate compound 22 is a compound of formula (3). Compound 25 is a compound of formula (4).

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Vippagunta et al., abstract, Vippagunta, Sudha R. “Crystalline Solids.” Advanced Drug Delivery Reviews 48(2001): 3-26.
Written Opinion of the International Searching Authority for PCT/US2008/087435 dated Oct. 11, 2010.

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