@article {7186,
	title = {CONTIGNASTEROL, A HIGHLY OXYGENATED STEROID WITH THE UNNATURAL 14-BETA CONFIGURATION FROM THE MARINE SPONGE PETROSIA-CONTIGNATA THIELE, 1899},
	journal = {Journal of Organic Chemistry},
	volume = {57},
	number = {2},
	year = {1992},
	note = {ISI Document Delivery No.: HA466Times Cited: 56Cited Reference Count: 18},
	month = {Jan},
	pages = {525-528},
	type = {Article},
	abstract = {Contignasterol (1), a highly oxygenated steroid with the {\textquoteright}{\textquoteright}unnatural{\textquoteright}{\textquoteright} 14-beta proton configuration and a cyclic hemiacetal functionality in its side chain, has been isolated from the marine sponge Petrosia contignata. The structure of contignasterol was elucidated via spectroscopic studies of its tetraacetate 2 and its reduction product pentaacetate 5. Contignasterol (1) is the first example of a naturally occurring steroid with the {\textquoteright}{\textquoteright}unnatural{\textquoteright}{\textquoteright} 14-beta proton configuration.},
	keywords = {C-13 ASSIGNMENTS, H-1, NMR-SPECTROSCOPY},
	isbn = {0022-3263},
	url = {<Go to ISI>://A1992HA46600024},
	author = {Burgoyne, D. L. and Andersen, R. J. and Allen, T. M.}
}
@article {7080,
	title = {RUBROLIDES-A-H, METABOLITES OF THE COLONIAL TUNICATE RITTERELLA-RUBRA},
	journal = {Journal of Organic Chemistry},
	volume = {56},
	number = {22},
	year = {1991},
	note = {ISI Document Delivery No.: GM576Times Cited: 53Cited Reference Count: 25},
	month = {Oct},
	pages = {6275-6280},
	type = {Article},
	abstract = {Rubrolides A (1) to H (8), a new family of biologically active tunicate metabolites, have been isolated from Ritterella rubra. The structures of the rubrolides were solved by a combination of spectroscopic analysis and chemical interconversions. Rubrolides B (2) and H (8) represent some of the first chlorinated metabolites known from tunicates. The rubrolides are potent in vitro antibiotics and they show moderate but selective inhibition of protein phosphatases 1 and 2A.},
	keywords = {C-13 ASSIGNMENTS, CARIBBEAN TUNICATE, ECTEINASCIDIA-TURBINATA, H-1, MARINE NATURAL-PRODUCTS, NMR, SIGILLINOIDES},
	isbn = {0022-3263},
	url = {<Go to ISI>://A1991GM57600012},
	author = {Miao, S. C. and Andersen, R. J.}
}
@article {7083,
	title = {TRITERPENOID GLYCOSIDES FROM THE NORTHEASTERN PACIFIC MARINE SPONGE XESTOSPONGIA-VANILLA},
	journal = {Canadian Journal of Chemistry-Revue Canadienne De Chimie},
	volume = {69},
	number = {9},
	year = {1991},
	note = {ISI Document Delivery No.: GH861Times Cited: 7Cited Reference Count: 13},
	month = {Sep},
	pages = {1352-1364},
	type = {Article},
	abstract = {Isoxestovanin A (6), xestovanin B (7), xestovanin C (8), dehydroxestovanin A (9), epidehydroxestovanin A (10), dehydroxestovanin C (11), and secodehydroxestovanin A (12), seven new triterpenoid glycosides, have been isolated from the Northeastern Pacific sponge Xestospongia vanilla. The structures of the metabolites were determined by a combination of spectroscopic analysis and chemical degradation. The aglycone of 6 has the new isoxestovanane triterpenoid carbon skeleton. Compounds 7, 8, and 11 are the first X. vanilla triterpenoid glycosides known to contain three monosaccharide subunits.},
	keywords = {C-13 ASSIGNMENTS, GLYCOSIDE, H-1, NMR, SPONGE, SUGARS, TRITERPENOID, XESTOSPONGIA},
	isbn = {0008-4042},
	url = {<Go to ISI>://A1991GH86100003},
	author = {Morris, S. A. and Northcote, P. T. and Andersen, R. J.}
}
