Penicillium turbatum

Hyalodendron sp. (fungus) Penicillium turbatum Pithomyces chartarum ... 

Anitibiotc A26771B (1) is a 16-membered ring macrocyclic lactone isolated from the fermentation broth of Penicillium turbatum. As the name implies, this compound possesses antibiotic activity and is the simplest macrocyclic compound... 

The piperazinedione framework is also present in hyalodendrin, which is an epidisulfane with the substituents given in Table d. The corresponding epitrisulfane has been isolated from cultures of an unidentified fungus, while the epitetrasulfane was obtained from chloroform extracts of fermentations of Hyalodendron sp. it is also produced by Penicillium turbatum In all cases, however, it is unknown whether these polysulfanes are present in the organisms, or resulted from the work-up procedure by decomposition of the corresponding disulfane. Such conversion reactions have in fact been observed. ... 

Arai, K., Rawlings, B. J., Yoshizawa,Y., and Vederas, J. C., Biosynthesis of antibiotics A26771B by Penicillium turbatum and dehydrocurvularin by Altemaria cinerariae Comparison of stereochemistry of polyketide and fritty acid oioyl thiol ester reductases. J. Am. Chem. Soc 111, 3391-3399 (1989). 

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