Patents by Inventor Paolo Petacchi

Paolo Petacchi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for the preparation of 16,17 acetals of pregnane derivatives with control of the epimeric distribution at the C-22 position
    Patent number: 6169178
    Abstract: Described herein is a process for the preparation of an acetal of formula (I) in which R1 is an alkyl, R2 is H or an acyl, X is &bgr;-OH and Y is H, comprising the acetalization with control of the epimeric distribution at the C-22 position, for treatment with R1 CHO in aqueous HBr or HI of a compound of formula (II) in which R2 has the meaning specified above, R3 and R4 are both H, or, taken together, are —C(R5)(R6)—, where R5 and R6, which may be the same or different from one another, are alkyl groups, and X and Y are chosen from among the following: A) X and Y, taken together, are an additional bond between C-9 and C-11; B) X is &bgr;-OH, and Y is H or an &agr;-halogen; C) X is &bgr;-OR7 where R7 is an acyl, and Y is H or an &agr;-halogen; and D) X and Y, taken together, are —O—.
    Type: Grant
    Filed: April 28, 1998
    Date of Patent: January 2, 2001
    Assignee: Farmabios S.r.l.
    Inventors: Filippo La Loggia, Paolo Petacchi