Petersen, Sven

[["dc.bibliographiccitation.firstpage","1619"],["dc.bibliographiccitation.issue","9"],["dc.bibliographiccitation.journal","European Journal of Organic Chemistry"],["dc.bibliographiccitation.lastpage","1624"],["dc.contributor.author","Tietze, Lutz Friedjan"],["dc.contributor.author","Petersen, S."],["dc.date.accessioned","2018-11-07T09:06:14Z"],["dc.date.available","2018-11-07T09:06:14Z"],["dc.date.issued","2001"],["dc.description.abstract","The estrane 4 was synthesized by two successive Heck reactions starting from enantiopure 2 and the cyclohexenone 5, which contains a (Z)-bromovinyl group. The first intermolecular Pd-catalyzed reaction leads to 10 in a highly regio-and diastereoselective manner. Transformation of the enone 10 to give the corresponding enol triflate 14 followed by an intramolecular Heck reaction affords the cyclized product 4 with an unusual cis-junction of the rings B and C in high yield."],["dc.identifier.isi","000168599400002"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/25510"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Wiley-v C H Verlag Gmbh"],["dc.relation.issn","1434-193X"],["dc.title","Stereoselective synthesis of novel 19-nor-steroids by a double Heck reaction"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","3755"],["dc.bibliographiccitation.issue","20"],["dc.bibliographiccitation.journal","Chemistry - A European Journal"],["dc.bibliographiccitation.lastpage","3760"],["dc.bibliographiccitation.volume","6"],["dc.contributor.author","Tietze, Lutz Friedjan"],["dc.contributor.author","Schneider, G."],["dc.contributor.author","Wolfling, J."],["dc.contributor.author","Fecher, A."],["dc.contributor.author","Nobel, T."],["dc.contributor.author","Petersen, S."],["dc.contributor.author","Schuberth, I."],["dc.contributor.author","Wulff, C."],["dc.date.accessioned","2018-11-07T09:08:08Z"],["dc.date.available","2018-11-07T09:08:08Z"],["dc.date.issued","2000"],["dc.description.abstract","Hetero-Diels - Alder reaction of the steroidal exocyclic enol ethers 14 and 15, obtained from the secoestrones 8 and 9 by reduction, iodoetherification, and elimination, with ethyl O-benzoyldiformylacetate (16) leads to the spiroacetals 17 and 18 as a mixture of four diastereomers. Reduction of the major diastereomers 17a and 18 a with DIBAH and subsequent hydrogenation yields the novel natural product hybrids 21, 23, 24, and 25, which possess the structural features of the steroid estrone (7) and the mycotoxin talaromycin 6."],["dc.identifier.doi","10.1002/1521-3765(20001016)6:20<3755::AID-CHEM3755>3.3.CO;2-C"],["dc.identifier.isi","000090033100012"],["dc.identifier.pmid","11073246"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/25956"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Wiley-v C H Verlag Gmbh"],["dc.relation.issn","0947-6539"],["dc.title","A novel approach in drug discovery: Synthesis of estrone-talaromycin natural product hybrids"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1827"],["dc.bibliographiccitation.issue","9"],["dc.bibliographiccitation.journal","European Journal of Organic Chemistry"],["dc.bibliographiccitation.lastpage","1830"],["dc.contributor.author","Tietze, Lutz Friedjan"],["dc.contributor.author","Petersen, S."],["dc.date.accessioned","2018-11-07T10:53:11Z"],["dc.date.available","2018-11-07T10:53:11Z"],["dc.date.issued","2000"],["dc.description.abstract","The D-homosteroid 1 was synthesized by two successive Heck reactions starting from enantiopure 3 and the bromoarene 2 containing a (Z)-bromovinyl group. The first intermolecular Pd-catalyzed reaction leads to 6 in a highly regio- and diastereoselective way which forms 1 with an unusual cis-junction of the rings B and C by a second intramolecular Heck reaction."],["dc.identifier.isi","000087022100020"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/49297"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Wiley-v C H Verlag Gmbh"],["dc.relation.issn","1434-193X"],["dc.title","Stereoselective total synthesis of a novel D-homosteroid by a twofold Heck reaction"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]