Asteltoxins belong to a group of polyene pyrone mycotoxins that are known be potent inhibitors mitochondrial ATP synthesis and hydrolysis. Asteltoxin A was first isolated from the toxic maize cultures Aspergillus stellatus. Several attempts have been made synthesize asteltoxin A, starting with bis(tetrahydrofuran) moiety has demonstrated previously in biosynthetic studies. This review highlight...

Abstract Experimentally and quantum chemical calculations have established that the main ways of deactivation electron excitation energy for 4,4′-substituted AE with electronic acceptor derivatives are, along trans–sic isomerization, transition an from a singlet excited state to ground fluorescent radiation. For molecules electrodonor substituents, intercombination S-T occurs observation phosph...

BACKGROUND AND OBJECTIVES In the present study, isolation of Streptomyces associated with marine sponges and its bioactive potential against fish and shellfish pathogens were assessed. The Streptomyces sp. were isolated from the marine sponges namely Callyspongia diffusa, Mycale mytilorum, Tedania anhelans and Dysidea fragilis collected from Vizhinjam port, situated in the South-West coast of I...