摘要:
Incubation of 13-deoxy ivermectin aglycone with a species of B . subtilis and of S . griseus results in the production of 13-β ivermectin monoglucopyranoside as the major product and of 5-β ivermectin monoglucopyranoside as the minor product.
摘要:
Described is a new microorganism, Actinoplanacete sp. , (Merck Culture Collection MA 6559) ATCC No. 53771. The microorganism acts as a demethylating agent and can produce the new immunosuppressants, "demethomycin" (L-682,993) a C-31 demethylated analog of L-679,934, and "demethimmunomycin" (L-683,742) a C-31 demethylated analog of L-683,590, under novel fermentation conditions. These macrolide immunosuppressants are useful in preventing human host rejection of foreign organ transplants, e.g. bone marrow and heart transplants.
摘要:
Described is a new immunosuppressant, L-685,487, a monodemethylated rearranged derivative of L-683,590, produced under fermentation conditions utilizing the microorganism, unidentified Actinomycete (Merck Culture Collection MA 6474) ATCC No. 53828. The macrolide immunosuppressant is useful in preventing human host rejection of foreign organ transplants, e.g. bone marrow and heart transplants.
摘要翻译:描述了一种新的免疫抑制剂L-685,487,L-683,590的单甲基化重排的衍生物,其在使用微生物的发酵条件下生产,不明的放线菌(Merck Culture Collection MA 6474)ATCC No.5828。大环内酯类免疫抑制剂可用于预防人宿主 排除外来器官移植物,例如 骨髓和心脏移植。
摘要:
Macrolides having the formula: in which R 1 , R 2 , R 3 and the 22,23-linkage have the following values:
A: Ri = H, R 2 = OH, R 3 = CH 3 , 22,23-single bond B: R 1 = H, R 2 = OH, R 3 = CH 3 , 22,23-double bond C: R 1 = OH, R 2 = H, R 3 = H, 22,23-double bond are isolated from the fermentation broth, using avermectin Bla, avermectin Blb or 22,23-dihydro avermectin Bla as a substrate, of Nocardia autotrophica ATCC 35203. The compounds are highly potent antiparasitic, insecticidal, and anthelmintic agents and can be made into compositions for such uses.
摘要:
Incubation of 13-deoxy ivermectin aglycone with a species of B . subtilis and of S . griseus results in the production of 13-β ivermectin monoglucopyranoside as the major product and of 5-β ivermectin monoglucopyranoside as the minor product.
摘要:
Incubation of 13-β-hydroxy avermectin aglycone with a species of B. subtilis results in the production of 13-β ivermectin monoglucopyranoside as the major product and of 5-β ivermectin monoglucopyranoside as the minor product.
摘要:
Described is a process for producing a new immunosuppressant, "demethimmunomycin" (L-683,742) a C-31 demethylated analog of L-683,590 under novel fermentation conditions utilizing the microorganism, Actinoplanacete sp. (Merck Culture Collection MA 6559) ATCC No. 53771. The macrolide immunosuppressant is useful in preventing human host rejection of foreign organ transplants, e.g. bone marrow and heart transplants.
摘要:
Described is a process for producing a new immunosuppressant, "demethomycin" (L-682,993) a C-31 demethylated analog of L-679,934 under novel fermentation conditions utilizing the microorganism, Actinoplanacete sp. , (Merck Culture Collection MA 6559) ATCC No. 53771. The macrolide immunosuppressant is useful in preventing human host rejection of foreign organ transplants, e.g. bone marrow and heart transplants.
摘要翻译:描述了在使用微生物Actinoplanacete sp。(Merck Culture Collection MA 6559)ATCC No.的新型发酵条件下生产新的免疫抑制剂“德诺霉素”(L-682,993)L-679,934的C-31去甲基化类似物的方法。 大肠杆菌免疫抑制剂可用于防止外来器官移植的人宿主排斥,例如 骨髓和心脏移植。
摘要:
Macrolides having the formula: in which R 1 , R 2 , R 3 and the 22,23-linkage have the following values: A: Ri = H, R 2 = OH, R 3 = CH 3 , 22,23-single bond B: R 1 = H, R 2 = OH, R 3 = CH 3 , 22,23-double bond C: R 1 = OH, R 2 = H, R 3 = H, 22,23-double bond are isolated from the fermentation broth, using avermectin Bla, avermectin Blb or 22,23-dihydro avermectin Bla as a substrate, of Nocardia autotrophica ATCC 35203. The compounds are highly potent antiparasitic, insecticidal, and anthelmintic agents and can be made into compositions for such uses.