摘要:
Compounds of formula (I), in which [R1 and R2], [R3 and R4] and [R5 and R6] represent a carbon-carbon bond or two hydrogen atoms; R2 additionally represents alkyl; R7, R8 and R9 represent groups including H or OH, R10 has various significances including alkyl and alkenyl; X and Y represent groups including O and (H, OH); R14, R15, R16, R17, R18, R19, R22 and R23 represent H or alkyl; R20 and R21 represent groups including O, (H, OH) and (H, O-alkyl), n is 1, 2 or 3, and in addition, Y, R10 and R23, together with the carbon atoms to which they are attached, may represent a heterocyclic ring, (with certain provisos) are described. Processes for making the compounds and pharmaceutical formulations containing them, e.g. for use as immunosuppressive agents, are also described.
摘要:
57 An intermediate useful in the synthesis of milbemycin derivatives having an ether bond at the 13-position and which is represented by the general formula (IIId) :
wherein R represents a methyl group, an ethyl group, an isopropyl group or a sec-butyl group, and R 5 and R 6' each individually represents a hydrogen atom or a protecting group, and related precursors as well as to a process for producing these intermediates.
摘要:
Avermectin compounds are glycosylated the 14a- position by adding the avermectin compounds to the fermentation medium of Bacillus subtilis . The 14a-methyl group of the avermectin compound is glycosylated with a glycosyl moiety, specifically a glucose group. The compounds are potent anthelmintic and antiparasite agents, and compositions for such uses are also disclosed.
摘要:
Disclosed herein are compounds of structural formula (I) which are useful as cholesterol lowering agents. These compounds are also useful as inhibitors of squalene synthetase, inhibitors of fungal growth, inhibitors of farnesyl-protein transferase and farnesylation of the oncogene protein Ras. These compounds are also useful in the treatment of cancer.
摘要:
Disclosed herein are compounds of structural formula (I) which are useful as cholesterol lowering agents. These compounds are also useful as inhibitors of squalene synthetase, inhibitors of fungal growth, inhibitors of farnesyl-protein transferase and farnesylation of the oncogene protein Ras. These compounds are also useful in the treatment of cancer.