| alkaloids from the fungus penicillium spathulatum as α-glucosidase inhibitors. | benzomalvin a (1), quinolactacins a1 (2), a2 (3) and b (4), quinolonimide (5), asperphenamate (6), and a new halogenated polyhydroxyanthraquinone, namely 2-chloro-6-[2'(s)-hydroxypropyl]-1,3,8-trihydroxy-anthraquinone (7), were isolated from an organic extract obtained from the solid culture of penicillium spathulatum b35. compounds 2 and 3 were isolated as an epimeric mixture, and compound 4 as a racemate. the structure of 7 was elucidated using 1d and 2d nmr, combined with computational method ... | 2016 | 27399232 |
| two new penicillium species penicillium buchwaldii and penicillium spathulatum, producing the anticancer compound asperphenamate. | penicillium buchwaldii sp. nov. (type strain cbs 117181(t) = ibt 6005(t) = imi 30428(t) ) and penicillium spathulatum sp. nov. (cbs 117192(t) = ibt 22220(t) ) are described as new species based on a polyphasic taxonomic approach. isolates of p. buchwaldii typically have terverticillate conidiophores with echinulate thick-walled conidia and produce the extrolites asperphenamate, citreoisocoumarin, communesin a and b, asperentin and 5'-hydroxy-asperentin. penicillium spathulatum is unique in ha ... | 2013 | 23173673 |