| 摘要 |
NEW MATERIAL:The compound of formula [R is H (in the case of DC-87-A) or -0-2-0-methyl-alpha-rhamnose (in the case of DC-87-B)]. USE:An antibacterial agent and antitumor agent. PREPARATION:A microbial strain belonging to Streptosporangium genus and capable of producing DC-87-A and/or DC-87-B (e.g. Streptosporangium.SP.DO.87, FERM-P No. 7032, belonging to actinomycete) is cultured in a medium to accumulate the DC-87-A (abbreviated as A) and/or DC-87-B (abbreviated as B), and A and/or B are separated from the culture product. Some of the physicochemical properties of the compounds are as follows. Melting point, A) 125-127 deg.C, B) 188-193 deg.C; molecular weight, A) 370, B) 546, molecular formula, A) C20H18O7, B) C27H30O12; elemental analysis B) C 57.85%, H 5.50%, etc. |
