Abstract: Disclosed are novel antifungal agents having the formula: ##STR1## as well as a pharmaceutically acceptable salt, ester of prodrug thereof, whereinR is: ##STR2## --C(O)--R.sub.1 wherein R.sub.1 is alkyl, alkenyl, aryl, arylalkenyl, aryl-aryl-, arylalkoxy-aryl-, aryl-aryl-aryl-, arylkoxy-aryl-aryl-, or ##STR3## wherein R.sub.2 is alkylamino, dialkylamino, (heterocyclic)alkyl, aryl, or arylalkyl; andX is O, NH, or NR.sub.3 wherein R.sub.3 is alkyl or aryl. Also disclosed are pharmaceutical compositions comprising a compound of the invention in combination with a pharmaceutically acceptable carrier; and a process for preparing the compounds of the invention.

Abstract: Novel antifungal agents having the formula: ##STR1## wherein R is hydrogen or --C(O)--R.sub.1 wherein R.sub.1 is alkenyl, C.sub.2 -C.sub.12 -alkyl, aryl, arylalkenyl, arylalkyl, aryl-aryl-, arylalkoxy-aryl-, aryloxyl-aryl-, aryl-aryl-aryl- or arylalkoxy-aryl-aryl-, or pharmaceutically acceptable salts, esters or prodrugs thereof, as well as (i) pharmaceutical compositions comprising such compounds, (ii) methods of treatment using such compounds, and (iv) methods and fungal cultures useful in making the same.

Abstract: Antimicrobial compounds having the formula ##STR1## wherein R.sup.1 and R.sup.2 are independently selected from the group consisting of hydrogen and C.sub.1 -to-C.sub.4 alkanoyl;R.sup.3 and R.sup.4 are selected from the group consisting of(a) R.sup.3 is hydrogen and R.sup.4 is hydroxy,(b) R.sup.3 is hydroxy and R.sup.4 is hydrogen,(c) R.sup.3 and R.sup.4 taken together are .dbd.O; or selected from the group consisting of hydrogen and hydroxy; andR.sup.5 and R.sup.6 are independently selected from the group consisting of hydrogen, bromine and chlorine, with the proviso that at least one of R.sup.5 and R.sup.6 must be bromine. Also disclosed are pharmaceutical compositions comprising such compounds, methods of treating bacterial infection by the administration thereof and a process for preparing said compounds.

Abstract: Novel antifungal and antitumor agents having the formula ##STR1## as well as pharmaceutically acceptable salts, esters, amides and pro-drugs thereof, wherein R is selected from the group consisting of ##STR2## Also disclosed are pharmaceutical compositions comprising such compounds, and methods of treatment and processes of manufacture relating thereto.

Abstract: Novel antifungal agents having the formula: ##STR1## wherein R is hydrogen or a radical of the formula ##STR2## and pharmaceutically acceptable prodrugs thereof, as well as (i) pharmaceutical compositions comprising such compounds, (ii) methods of treatment using such compounds, and (iv) methods and fungal cultures useful in making the same.

Abstract: Novel antifungal and antitumor agents having the formula ##STR1## as well as pharmaceutically acceptable salts, esters, amides and pro-drugs thereof, wherein R is selected from the group consisting of ##STR2## Also disclosed are pharmaceutical compositions comprising such compounds, and methods of treatment and processes of manufacture relating thereto.

Abstract: A compound having the structural formula ##STR1## or a pharmaceutically acceptable salts and prodrugs thereof, wherein R.sup.1 is selected from the group consisting of hydrogen and loweracyl, and R.sup.2 is selected from the group consisting of hydrogen, hydroxyl and methoxyl, as well as methods for the preparation and use thereof.

Abstract: New antibiotics, unphenelfamycin and phenelfamycins A-D, are produced by microorganisms belonging to the genus Streptomyces. The antibiotics have antibacterial activity against gram-positive and gram-negative anaerobic organisms and are effective in improving the feed efficiency and growth rate of livestock, including poultry.

Abstract: A mixture of new coumamidine compounds are produced by a microorganism, belonging to the genus Saccharopolyspora. The compounds have antibiotic activity against a broad spectrum of bacteria.

Abstract: New compounds, tiacumicins, are produced by a microorganism belonging to the genus Dactylosporangium. The compounds are effective Gram-positive antibiotics.