New process for producing immunosuppressant agent

Details New process for producing immunosuppressant agent New process for producing immunosuppressant agent

C - Chemistry, Metallurgy

12

N

195/101, 195/34.

C12N 1/00 (2006.01) C07H 19/01 (2006.01) C12P 1/06 (2006.01) C12P 17/18 (2006.01)

Patent

CA 2012274

7352P/5292A 17865 TITLE OF THE INVENTION NEW PROCESS FOR PRODUCING IMMUNOSUPPRESSANT AGENT ABSTRACT OF THE DISCLOSURE Described is a new process for producing the immunosuppressant, L-683,742, a C-31 demethylated, derivative of h-683,590 (FK-520), produced under fermentation conditions utilizing the new mutant microorganism, streptomyces hygroscopicus subsp. ascomvceticus (Merck Culture Collection MA 6646) ATCC No. 53855, being a blocked mutant of StreptomYces hyqroscopicus subsp. ascomyceticus (MA 6475) ATCC No. 14891. The macrolide immunosuppressant is useful in preventing human host rejection of foreign organ transplants, e.g. bone marrow and heart transplants.

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