New pregaliellalactonoids from Galiella rufa
An extract of a culture of the fungus Galiella rufa yielded several new derivatives of pregaliellalactone (1) that were characterised by NMR and MS experiments. The tetraene 4 has been reported previously, but was in this investigation isolated in sufficient amounts for the determination of the configuration of the C-4/C-5 double bond which is Z, not E. The possibility that any of the new compounds are involved in the biosynthesis of 1 is discussed.
Reference
New pregaliellalactonoids from Galiella rufa
Zilma Escobar, Headley Williams, Richard Phipps, Deepa Karunakaran, Jonathan Steele, Olov Sterner,
Phytochemistry Letters, 2015, 12, 138-141,
DOI: 10.1016/j.phytol.2015.03.009.