Sapphyrins, derivatives and syntheses

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dc.contributor.assigneeBoard of Regents, The University of Texas System
dc.creatorJonathan L. Sessler
dc.creatorMichael John Cyr
dc.date.accessioned2019-10-23T14:30:59Z
dc.date.available2019-10-23T14:30:59Z
dc.date.filed1992-10-26
dc.date.issued1994-04-12
dc.description.abstractThe present invention involves, in addition to many unique substituted sapphyrins, a novel method for synthesizing sapphyrins with good efficiency and high yield. An improved 9-step synthesis of substituted sapphyrins, e.g., the two C.sub.2 symmetric sapphyrins, compounds 2 and 4 of FIG. 1C, is described herein. This synthesis involves as an important step the condensation between a tripyrrane diacid and a diformyl bipyrrole. The key tripyrrane component is prepared in three high-yield steps from readily available pyrrolic precursors and the bipyrrole portion is prepared in four steps from ethyl 3-methyl-4-methylpyrrole-2-carboxylate in roughly 33% yield overall.
dc.description.departmentBoard of Regents, University of Texas System
dc.identifier.applicationnumber7966317
dc.identifier.patentnumber5302714
dc.identifier.urihttps://hdl.handle.net/2152/76564
dc.identifier.urihttp://dx.doi.org/10.26153/tsw/3653
dc.publisherUnited States Patent and Trademark Office
dc.relation.ispartofUniversity of Texas Patents
dc.relation.ispartofUniversity of Texas Patents
dc.rights.restrictionOpen
dc.rights.restrictionOpen
dc.subject.cpcA61K41/0076
dc.subject.cpcA61K47/54
dc.subject.cpcA61K47/546
dc.subject.cpcA61K47/558
dc.subject.cpcC07D487/22
dc.subject.cpcC07H15/26
dc.subject.cpcC07H21/00
dc.subject.cpcC12N15/101
dc.subject.uspc534/560
dc.subject.uspc540/472
dc.subject.uspc540/496
dc.subject.uspc548/518
dc.titleSapphyrins, derivatives and syntheses
dc.typePatent

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