Claims
- 1. A process for producing antibiotic 68-1147 complex which comprises cultivating an antibiotic 68-1147 producing strain of Micromonospora arborensis NRRL 8041 in an aqueous nutrient medium containing assimilable sources of carbon and nitrogen, under aerobic conditions until substantial antibiotic activity is imparted to said medium and isolating antibiotic 68-1147 complex therefrom.
- 2. A process according to claim 1 wherein the microorganism is cultivated at a temperature between 20.degree. and 40.degree. l C for from about 2 to about 7 days and from about pH 6.0 to about pH 8.5.
- 3. A process according to claim 2 wherein the microorganism is cultivated at a temperature between 28.degree. and 35.degree. C and from about pH 7.0 to about pH 8.0.
- 4. A process according to claim 3 including the step of separating antibiotic 68-1147 I and antibiotic 68-1147II of the thus isolated antibiotic 68-1147 complex by chromatography on silica gel.
- 5. Antibiotic 68-1147 I, a compound which:
- a. is effective in inhibiting the growth of various bacteria, especially Gram positive bacteria;
- b. has an optical rotation [.alpha.].sub.D.sup.26.degree. = -87.5.degree. (C,0.4%, dioxane)
- c. has a characteristic ultraviolet absorption spectrum in trifluoroethanol as follows:
- ______________________________________.lambda. max E.sup.1%.sub.cm______________________________________202 m.mu. 53.55247 32.55308 10.72______________________________________
- d. has the following elemental analysis: C, 49.46; H, 5.20; N, 14.88; O, 16.18; S, 10.47;
- e. has a melting point of 229.degree.- 231.degree. C dec.
- f. has a characteristic infrared absorption spectrum in mineral oil (Nujol) with absorption at:
- ______________________________________3.05 m,sp 7.30 m,sp 9.75 w,sp3.45 s,sp 7.45 sh 9.95 sh5.78 w,sp 7.65 w,sp 10.58 w,br6.08 s 8.30 w,sp 10.70 w,br6.31 w,sp 9.00 w,sp 11.20 w,br6.60 s 9.15 w,br 11.30 sh6.65 s 9.50 w,br 11.90 microns w,br6.75 s 9.40 w,br______________________________________
- g. contains the following aminoacids: threonine, proline, alanine, cysteine, isoluecine and tyrosine.
- 6. Antibiotic 68-1147 II, made by the process of claim 4 being further characterized as having the following characteristics:
- a. is effective in inhibiting the growth of various bacteria, especially Gram positive bacteria;
- b. has an optical rotation [.alpha.].sub.D.sup.26.degree. = -65.5.degree. (C, 0.4%, dioxane);
- c. has a characteristic ultraviolet absorption spectrum in trifluoroethanol as follows:
- ______________________________________ .lambda. max ##STR3##______________________________________240 m.mu. 18.84300 m.mu. 5.42______________________________________
- d. has the following elemental analysis: C,50.24; H, 4.98; N, 15.87; O, 16.24; S, 12.67 (by difference);
- e. has a melting point .congruent.300.degree. C dec., and
- f. contains the following amino acids: threonine, proline, alanine, isoleucine and tyrosine.
Parent Case Info
This application is a continuation-in-part application of our copending application, Ser. No. 516,242, filed Oct. 18, 1974 (now abandoned).
Non-Patent Literature Citations (1)
Entry |
miller, The Pfizer Handbook of Microbial Metabolites, McGraw-Hill Book Co., Inc., N.Y., N.Y., 1961, pp. 595-596. |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
516242 |
Oct 1974 |
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