Rhizochalins C and D from the Sponge Rhizochalina incrustata. A Rare threo-Sphingolipid and a Facile Method for Determination of the Carbonyl Position in α,ω-Bifunctionalized Ketosphingolipids

Rhizochalins C and D from the Sponge <i>Rhizochalina incrustata.</i> A Rare <i>threo</i>-Sphingolipid and a Facile Method for Determination of the Carbonyl Position in α,ω-Bifunctionalized Ketosphingolipids Rhizochalins C and D from the Sponge <i>Rhizochalina incrustata.</i> A Rare <i>threo</i>-Sphingolipid and a Facile Method for Determination of the Carbonyl Position in α,ω-Bifunctionalized Ketosphingolipids Rhizochalin A, a Novel Two-Headed Sphingolipid from the Sponge <i>Rhizochalina </i><i>i</i><i>ncrustata</i> Rhizochalin A, a Novel Two-Headed Sphingolipid from the Sponge Rhizochalina incrustata Rhizochalinin A, a new antileukemic two-headed sphingolipid from the sponge Rhizochalina incrustata Rhizochalin, a novel secondary metabolite of mixed biosynthesis from the sponge Rhizochalina incrustata Enantiodivergent Biosynthesis of the Dimeric Sphingolipid Oceanapiside from the Marine Sponge <i>Oceanapia phillipensis</i>. Determination of Remote Stereochemistry Axiceramide A and B, Two Novel tri‐α‐Glycosylceramides from the Marine Sponge <i>Axinella sp.</i> Glycolipids from Sponges. Part 9: Plakoside C and D, Two Further Prenylated Glycosphingolipids from the Marine Sponge Ectyoplasia ferox Marine Bifunctional Sphingolipids from the Sponge Oceanapia ramsayi