| 摘要 |
Disclosed is a new synthetic pathway for the production of precursors for the production of compounds having general formula (8,10,12). During said synthesis, compounds of general formal (4,B) are produced in a microbiological reaction. The meanings of radicals R, R, R, R, Ri R' and group U-V-W-X-Y-Z are defined in the patent claims.8, 10, 12. |
