Biomedical subjects
Publications and source records attributed to G C Reddy.
A novel antibiotic, aranorosin, was isolated from the fermentation broth of a new fungal isolate identified as Pseudoarachniotus roseus. The antibiotic showed a wide spectrum of activity.
A new antibiotic swalpamycin (1) has been isolated from the culture broth of Streptomyces sp. Y-84,30967. The antibiotic has the molecular formula of C37H56O14 and belongs to the class of 16-membered neutral macrolide antibiotics. Its structure has been elucidated by an analysis of its spectral properties. It contains a novel aglycone herein called swalpanolide.
Mulundocandin, a new lipopeptide antibiotic, was isolated from the culture broth of a strain of Aspergillus sydowi No. Y-30462. The antibiotic, obtained as a colorless amorphous powder having the molecular formula C48H77N7O16, is an antifungal antibiotic active against yeasts and filamentous fungi.
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The absolute configuration of the ring system of the antibiotic G7063-2 has been established as being the same as that reported for terreic acid, based on circular dichroism data. During structure elucidation experiments, reaction with ethereal diazomethane gave an adduct whose structure is proposed.
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Two aristololactam analogues were isolated from the extract of Saururus cernuus. One of these was the known aristololactam BII [1] (cepharanone B) and the other new, named sauristolactam [2], was shown to be the lactam of 10-aminomethyl-3-hydroxy-4-methoxyphenanthrene-1-carboxylic acid. Here we detail the first reported occurrence of compounds of the aristolactam group in the genus Saururus.