| 摘要 |
NEW MATERIAL:A compound shown by the formula I [R1 and R2 are H, methyl, ethyl, isopropyl, or hydroxymethyl (with the proviso that R1 and R2 are not methyl at the same time); R3 is -OH, or group shown by the formula II]. EXAMPLE:AMPB-Gly-Ala substance. USE:A herbicide. PREPARATION:A strain such as (Streptomyces hygroscopicus) SF-1293 strain (FERM BP-130), etc. belonging to the genus Streptomyces is cultivated at about 28 deg.C preferably by submerged culture for 3-5 days. |
