. The actinomycetes. Actinomycetales. OH CHa. CHs CH3 ororHoC'HfC'H,)^ CH, CH, Table 18 lists some properties of tetra- Neomethymycin differs from merhymycin phenylboron derivatives of some macrolides. only in the position of a hydroxyl group. These derivatives can be used in the purifi- The exact structure of the spiramycins T.^BLE 18 Tetraphetiylborou derivatives of antibiotics (Zief et al., 1957) Molecular weight Nitrogen Sodium tetraplienylboron derivative Antibiotic Nitrogen Tlieory Found Ervthromvciii 733 830 640-744 689 % 183-186 148-153 138-144 157-161 % 1
. The actinomycetes. Actinomycetales. OH CHa. CHs CH3 ororHoC'HfC'H,)^ CH, CH, Table 18 lists some properties of tetra- Neomethymycin differs from merhymycin phenylboron derivatives of some macrolides. only in the position of a hydroxyl group. These derivatives can be used in the purifi- The exact structure of the spiramycins T.^BLE 18 Tetraphetiylborou derivatives of antibiotics (Zief et al., 1957) Molecular weight Nitrogen Sodium tetraplienylboron derivative Antibiotic Nitrogen Tlieory Found Ervthromvciii 733 830 640-744 689 % 183-186 148-153 138-144 157-161 % ' Carbomycin 1. 22 : Leucomvcin Oleandomycin Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Waksman, Selman A. (Selman Abraham), 1888-1973. Baltimore, Williams & Wilkins
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