{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/20793"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/20793","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Biologically active compounds from a clam and a tunicate","abstract":"Part I. Isolation and characterization of sphingosine analogs from the clam Spisula polynyma. Extracts of the Stimpson surf clam, Spisula polynyma, were found to cause a distinct alteration of the morphology of L1210 murine leukemia cells in which the compounds develop sharp points, usually located opposite to each other. The compounds responsible for this activity, spisulamines 285, 299 and 313 were isolated and characterized along with sphingosine and several of its analogs. The spisulamines were determined to be sphingoid-type bases. Specifically, spisulamine 285 is $(2S\\sp{\\*},3R\\sp{\\*})$-2-amino-3-octadecanol, while the other spisulamines are higher homologs. These compounds were also found to be cytotoxic to L1210 cells.","abstract_html":"Part I. Isolation and characterization of sphingosine analogs from the clam Spisula polynyma. Extracts of the Stimpson surf clam, Spisula polynyma, were found to cause a distinct alteration of the morphology of L1210 murine leukemia cells in which the compounds develop sharp points, usually located opposite to each other. The compounds responsible for this activity, spisulamines 285, 299 and 313 were isolated and characterized along with sphingosine and several of its analogs. The spisulamines were determined to be sphingoid-type bases. Specifically, spisulamine 285 is $(2S\\sp{\\*},3R\\sp{\\*})$-2-amino-3-octadecanol, while the other spisulamines are higher homologs. These compounds were also found to be cytotoxic to L1210 cells.","abstract_has_math":true,"creators":["Fregeau, Nancy Louise"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Chemistry","degree_department":null,"school":null,"contributors":["Rinehart, Kenneth L., Jr."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2011,"date_issued":"2011-05-07T12:49:27Z","date_published":"2011-05-07T12:49:27Z","updated_at":"2026-07-22T22:25:16Z","subjects":["Chemistry, Organic","Chemistry, Pharmaceutical"],"languages":["eng"],"rights":["Copyright 1992 Fregeau, Nancy Louise"],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["9780591636017","AAI9812827","(UMI)AAI9812827"],"render_values":[{"text":"9780591636017","href":null,"code":true},{"text":"AAI9812827","href":null,"code":true},{"text":"(UMI)AAI9812827","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/20793","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Rinehart, Kenneth L., Jr."]},{"key":"dc:creator","label":"Author","values":["Fregeau, Nancy Louise"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2011-05-07T12:49:27Z","10000-01-01","1992"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Chemistry"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Chemistry, Organic","Chemistry, Pharmaceutical"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["eng"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 1992 Fregeau, Nancy Louise"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["9780591636017","AAI9812827","(UMI)AAI9812827","http://hdl.handle.net/2142/20793"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Part I. Isolation and characterization of sphingosine analogs from the clam Spisula polynyma. Extracts of the Stimpson surf clam, Spisula polynyma, were found to cause a distinct alteration of the morphology of L1210 murine leukemia cells in which the compounds develop sharp points, usually located opposite to each other. The compounds responsible for this activity, spisulamines 285, 299 and 313 were isolated and characterized along with sphingosine and several of its analogs. The spisulamines were determined to be sphingoid-type bases. Specifically, spisulamine 285 is $(2S\\sp{\\*},3R\\sp{\\*})$-2-amino-3-octadecanol, while the other spisulamines are higher homologs. These compounds were also found to be cytotoxic to L1210 cells.","Part II. Ecteinascidins-antitumor compounds from the tunicate Ecteinascidia turbinata. Ecteinascidins 729, 743, 745, 756, 759A, 759B, and 770 have been isolated from the colonial tunicate Ecteinascidia turbinata. All of these compounds were cytotoxic and ecteinascidin 729 showed potent in vivo antitumor activity. The structures of these compounds were determined by extensive spectroscopic studies to be tris(tetrahydroisoquinolines) which were related to the saframycin class of antitumor antibiotics. The large number of quaternary carbons and heteroatoms required the use of long range $\\sp1$H-$\\sp1$H and $\\sp1$H-$\\sp{13}$C NMR techniques, particularly heteronuclear multiple-bond correlation. Fast atom bombardment mass spectrometry (FABMS) was also very useful in determining these structures, especially moving belt liquid chromatography/FABMS, tandem FABMS/MS and high resolution negative ion FABMS.","Made available in DSpace on 2011-05-07T12:49:27Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9812827.pdf: 9690049 bytes, checksum: 0f86b64b23df075286a6e5084aea9910 (MD5) Previous issue date: 1992","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T14:46:19Z Item is restricted indefinitely.","Restriction data tranferred 2014-07-01T11:20:42-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission","ETDs are only available to UIUC Users without author permission","U of I Only"]},{"key":"dc:title","label":"Title","values":["Biologically active compounds from a clam and a tunicate"]}]}],"canonical_facts":{"dc:contributor":["Rinehart, Kenneth L., Jr."],"dc:creator":["Fregeau, Nancy Louise"],"dc:date":["2011-05-07T12:49:27Z","10000-01-01","1992"],"dc:description":["Part I. Isolation and characterization of sphingosine analogs from the clam Spisula polynyma. Extracts of the Stimpson surf clam, Spisula polynyma, were found to cause a distinct alteration of the morphology of L1210 murine leukemia cells in which the compounds develop sharp points, usually located opposite to each other. The compounds responsible for this activity, spisulamines 285, 299 and 313 were isolated and characterized along with sphingosine and several of its analogs. The spisulamines were determined to be sphingoid-type bases. Specifically, spisulamine 285 is $(2S\\sp{\\*},3R\\sp{\\*})$-2-amino-3-octadecanol, while the other spisulamines are higher homologs. These compounds were also found to be cytotoxic to L1210 cells.","Part II. Ecteinascidins-antitumor compounds from the tunicate Ecteinascidia turbinata. Ecteinascidins 729, 743, 745, 756, 759A, 759B, and 770 have been isolated from the colonial tunicate Ecteinascidia turbinata. All of these compounds were cytotoxic and ecteinascidin 729 showed potent in vivo antitumor activity. The structures of these compounds were determined by extensive spectroscopic studies to be tris(tetrahydroisoquinolines) which were related to the saframycin class of antitumor antibiotics. The large number of quaternary carbons and heteroatoms required the use of long range $\\sp1$H-$\\sp1$H and $\\sp1$H-$\\sp{13}$C NMR techniques, particularly heteronuclear multiple-bond correlation. Fast atom bombardment mass spectrometry (FABMS) was also very useful in determining these structures, especially moving belt liquid chromatography/FABMS, tandem FABMS/MS and high resolution negative ion FABMS.","Made available in DSpace on 2011-05-07T12:49:27Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9812827.pdf: 9690049 bytes, checksum: 0f86b64b23df075286a6e5084aea9910 (MD5) Previous issue date: 1992","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T14:46:19Z Item is restricted indefinitely.","Restriction data tranferred 2014-07-01T11:20:42-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission","ETDs are only available to UIUC Users without author permission","U of I Only"],"dc:identifier":["9780591636017","AAI9812827","(UMI)AAI9812827","http://hdl.handle.net/2142/20793"],"dc:language":["eng"],"dc:rights":["Copyright 1992 Fregeau, Nancy Louise"],"dc:subject":["Chemistry, Organic","Chemistry, Pharmaceutical"],"dc:title":["Biologically active compounds from a clam and a tunicate"],"dc:type":["text"],"thesis:degree_discipline":["Chemistry"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:25:16Z"}