US Patent Issued to VITASYNTH SP. Z.O.O on Nov. 18 for "Method and intermediate compounds for the preparation of menaquinone MK-7" (Polish Inventors)

ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,473,248, issued on Nov. 18, was assigned to VITASYNTH SP. Z.O.O (Warsaw, Poland).

"Method and intermediate compounds for the preparation of menaquinone MK-7" was invented by Andrzej Krukowski (Warsaw, Poland) and Konrad Zielinski (Zduny, Poland).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a method and intermediate compounds for the preparation of menaquinone MK-7. The method for the preparation of menaquinone MK-7 is characterized in that, it comprises coupling of a compound of formula (11) with a compound of formula (17) in the presence of a base, to obtain a compound of formula (18), which is subjected to desulfonylation rea...