Patents by Inventor Kazuchiro Masuzaki

Kazuchiro Masuzaki 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).

  • METHOD FOR PREPARING PROSTAGLANDIN DERIVATIVE
    Publication number: 20100204491
    Abstract: Disclosed is a method for preparing a prostaglandin derivative of formula (A): which comprises reacting an aldehyde represented by formula (1): with a 2-oxoalkyl phosphonate in a reaction solvent under the presence of alkali hydroxide as sole base. By carrying out the reaction using an alkali hydroxide as sole base in the reaction system, the desired prostaglandin derivative can be obtained by simple procedures and with high yield.
    Type: Application
    Filed: April 19, 2010
    Publication date: August 12, 2010
    Applicants: SUCAMPO AG, R-TECH UENO, LTD.
    Inventors: Ryu HIRATA, Tatsuya Matsukawa, Kazuchiro Masuzaki, Ryuji Ueno