Add to ORKGTwo groups of sterol sulfates were obtained from aq. exts. of E. insignis. The more polar components are sulfated 3β,21-dihydroxy steroids; after solvolysis to remove the sulfate groups these were identified as I [R = H, R1 = (CH2)2C(:CH2)CHMe2 (Q), CH:CHCHMeCHMe2-(E), (CH2)3CHMe2 (Q1), CH:CHCH2CHMe2-(E); R2 = bond, R1 = Q, Q1]. The less polar components are sterol sulfates, which are normal constituents of starfish. The free sterol mixt. contained a low level of cholest-7-en-3β-ol and C26-29 5α-sterols. These findings may explain the apparent absence of asterosaponins in this species
A reinvestigation of the starfish Oreaster reticulatus has led to the isolation of sixteen steroidal...
A new sulfated asterosaponin (I), contg. the unprecedented (20R,22S)-5α-cholestra-9(11), 24(25)-dien...
Five sulfated steroidal glycosides were isolated from the aq. exts. of the whole bodies of the starf...
Two groups of sterol sulfates were obtained from aq. exts. of E. insignis. The more polar component...
Two groups of sterol sulfates were obtained from aq. exts. of E. insignis. The more polar component...
A complete steroid glycoside and polyhydroxysteroid anal. of the starfish S. borealis, collected at ...
A new sulfated steroidal glycoside, 3'-O-sulfate 24-O-(α-arabinofuranosyl)-5α-cholestane-3β,6α,8,15α...
Three novel sulphated polyhydroxylated steroids, named asterasterols A-C (1-3), have been isolated f...
A reinvestigation of the starfish Oreaster reticulatus has led to the isolation of sixteen steroidal...
A new sulfated asterosaponin (I), contg. the unprecedented (20R,22S)-5α-cholestra-9(11), 24(25)-dien...
Five sulfated steroidal glycosides were isolated from the aq. exts. of the whole bodies of the starf...
Two groups of sterol sulfates were obtained from aq. exts. of E. insignis. The more polar component...
Two groups of sterol sulfates were obtained from aq. exts. of E. insignis. The more polar component...
A complete steroid glycoside and polyhydroxysteroid anal. of the starfish S. borealis, collected at ...
A new sulfated steroidal glycoside, 3'-O-sulfate 24-O-(α-arabinofuranosyl)-5α-cholestane-3β,6α,8,15α...
Three novel sulphated polyhydroxylated steroids, named asterasterols A-C (1-3), have been isolated f...
A reinvestigation of the starfish Oreaster reticulatus has led to the isolation of sixteen steroidal...
A new sulfated asterosaponin (I), contg. the unprecedented (20R,22S)-5α-cholestra-9(11), 24(25)-dien...
Five sulfated steroidal glycosides were isolated from the aq. exts. of the whole bodies of the starf...