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Azalomycin F4a 2‐ethylpentyl ester (1) and Azalomycin F5a 2‐ethylpentyl ester (2), two new macrocyclic lactones, along with three known compounds of Azalomycins F3a (3), F4a (4) and F5a (5), were identified from metabolites of Streptomyces sp. 211726 isolated from mangrove rhizosphere soil. The complete 1H and 13C assignments of these compounds were achieved by using 1H, 13C, DEPT, HSQC, 1H‐1H COSY...
Two new oxidized sterols 1 and 2 were obtained from the active fraction of a mangrove fungus Aspergillus awamori isolated from the soils around the mangrove plant Acrostichum speciosum. Their structures were elucidated using spectroscopic methods as 22E‐7α‐methoxy‐5α,6α‐epoxyergosta‐8(14),22‐dien‐3β‐ol (1) and 22E‐3β‐hydroxy‐5α,6α,8α,14α‐diepoxyergosta‐22‐en‐7‐one (2). The NMR data and complete assignments...
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