| 摘要 |
NEW MATERIAL:Immune enhancer O-611B having the following physicochemical properties: Composition formula C27H39N3O2. Molecular weight 437. Specific ultraviolet spectrum. The infrared spectrum as shown in the figure. Characteristic nuclear magnetic resonance spectrum. USE:Immune enhancers, carcinostatics (C), or drugs in combination with C, accelerating lymphocytic blast transformation reaction, and carcinostatic actions. PROCESS:Strains, e.g. Streptomycesmitogenofaciens (FERM-PNo.4752), which belong to the genus Streptomyces and have the ability to produce the substance O- 611B, are cultured in a liquid medium, and the desired substance 0-611B is obtained from the culture. |
