l R. W. Shideler, Ph.D. thesis, University of Texas, Austin, 1955; W. D. Brown, Ph.D. thesis, University of Texas, Austin, 1955. 2 M. K. Young, H. K. Berry, E. Beerstecher, Jr., and J. S. Berry, University of Texas Publication No. 5109 ("Biochemial Institute Studies," Vol. 4 [Austin: University of Texas, 19511), p .189. 3L. Bellak, Dementia Praecox (New York: Grune & Stratton, 1948), p. 27. 4R....

A fractions obtained from the culture fluids of a seven fungal species identified as Verticillium albo-atrum; V. lecanii; V. bulbillosum; V. dahliae; Fusarium solani; F. oxysporum, and Aspergillus sclerociarum were shown to contain a compounds with a biological activity against twenty two clinical bacterial strains including eleven isolates of gram positive and other were gram negative. Among t...

Fredericamycin A is a novel antibiotic produced by a soil isolate of Streptomyces griseus (FCRC-48). In vitro, fredericamycin A exhibits antibacterial, antifungal, and cytotoxic activities. In vivo, fredericamycin A exhibits very good antitumor activity against P388 mouse leukemia as well as the CD8F mammary tumor and marginal activity against B16 melanoma. Fredericamycin A failed to demonstrat...

A three-component reaction between 1,2-phenylenediamine, ferrocenecarbaldehyde, and isocyanides in the presence of a catalytic amount of p-toluenesulfonic acid for the synthesis of 3,4-dihydroquinoxalin-2-amine derivatives containing a ferrocene unit is reported. This approach is an effective procedure because the products have a broad spectrum of biological and pharmacological activities such ...

The isolation, biological properties and structure elucidation of a sixteen-membered macrocyclic lactone antibiotic, designated A26771B (1), obtained from Penicillium turbatum are discussed.

INTRODUCTION The purpose of this study was to compare the setting time and post-setting solubility, flow, film thickness and dimensional changes of AH26 root canal sealer with AH26-Antibiotic combination. MATERIALS AND METHODS This study was performed according to British standard BS 6876 (2001) which tests the physicochemical properties of endodontic sealers. Three samples of each of tested ...

Alborixin is an ionophorous antibiotic of the nigericin group isolated from cultures of a strain of Streptomyces albus. It is active against Gram-postive bacteria and is coccidiostatic, but it is very toxic. The antibacterial principle was extracted with organic solvent from the mycelium, isolated in crystalline form and named alborixin.

Antibiotics and antimicrobial chemotherapeutics exist in large numbers in today’s pharmaceutical market. Despite their use is becoming increasingly restricted. The reason behind such a rapid decline is largely attributed to the development of drug resistance among microorganisms. Such a phenomenon is coupled by the toxicity possessed by many antimicrobials. Multiple drug resistance among highly...