Biologisch aktive Glycoside aus Asteroidea, VII. Steroid‐Oligoglycoside aus dem Seestern Luidia maculata Müller et Troschel, 2 Die Strukturen von zwei neuen Oligoglycosidsulfaten

Abstract

Aus dem wanrigen Extrakt der ganzen Seesterne Luidia /naculata Muller et Troschel konnten nach Trennungen an Amberlite XAD-2, ,,Droplet-counter-current"-Chromatographie, sowie Chromatographie an Kieselgel, Sephadex LH-20 und RP-8 zwei weitere Olipoglycosidsulfate isoliert werden, deren Strukturen mittcls chemischer und spektroskopischer Methoden als

Antifungal Steroidal Glycosides from the Patagonian StarfishAnasteriasminuta: Structure−Activity Correlations

“…The assignments of the NMR signals associated with the aglycon moiety (Table 1) were derived from 1 H-1 H COSY and HETCOR experiments. These data are very similar to those reported for (20R)-5R-cholest-9(11)-en-23-one-3 ,6R-diol 3-sulfate, the aglycon of asterosaponins isolated from the starfishes Marthasterias glacialis, 12 Coscinasterias tenuispina, 13 Luidia maculata, 14 and Neosmilaster georgianus. 15 In addition to the aglycon signals, the 1 H and 13 C NMR spectra of 2 (Table 2) In a similar manner, we were able to assign proton doublets at δ 1.83 (H 3 -6′′′) and 1.39 (H 3 -6′′′′′) to the methyl groups of the quinovose terminal unit and the fucose unit, respectively.…”

Asterosaponins: Structures, Taxonomic Distribution, Biogenesis and Biological Activities

“…Luidiaglycoside C Fukuoka Prefecture, Japan, depth was not reported [74] Sendai, Japan, depth was not reported [71] Noumea, New Caledonia, depth was not reported [73]…”

“…Luidiaglycoside C Fukuoka Prefecture, Japan, depth was not reported [74] 132 Luidiaglycoside D «-----------» [74] Family Goniopectinidae Goniopecten demonstrans Noumea, New Caledonia, depth was not reported [73]…”

“…Goniopectenoside A Deep waters of the Gulf of Mexico [75] Fukuoka Prefecture, Japan, depth was not reported [74] 132 Luidiaglycoside D Noumea, New Caledonia, depth was not reported [73]…”

Starfish Saponins, Part 18. Steroidal Glycoside Sulfates from the Starfish Linckia laevigata

“…The number of reported structures of asterosaponins, "sulfated steroidal glycosides," is rapidly growing. Following the structure elucidation of thornasteroside A, the major Acanthaster planet saponin, by Kitagawa and Kobayashi in 1978 (1), a number of novel structures have been recently described (2)(3)(4)(5)(6)(7)(8)(9)(10). All these compounds have common structural features.…”