title: Total synthesis of oxidized phospholipids. 3. The (11E)-9-hydroxy-13-oxotridec-11-enoate ester of 2-lysophosphatidylcholine.
abstract: A total synthesis of (11E)-9-hydroxy-13-oxotridec-11-enoate ester of 2-lysophosphatidylcholine (HOT-PC) was devised to facilitate identification of this oxidized phospholipid. A lactone, 8-(3-oxo-1H,6H-2-oxinyl)octanoic acid (1), believed to be generated through an intermediate (11E)-9-hydroxy-13-oxotridec-11-enoic acid (HOT), is produced upon autoxidation of linoleic acid. A synthesis of lactone 1 methyl ester was accomplished from HOT involving a novel trans-cis isomerization that is driven to completion by cyclization to a hemiacetal. An alternative route to this carbon skeleton was also achieved that provides the lactone 1 itself.
authors.affiliation: Department of Chemistry, Case Western Reserve University, Cleveland, Ohio 44106-7078, USA.
authors.forename: Y
authors.initials: Y
authors.lastname: Deng
authors.forename: R G
authors.initials: RG
authors.lastname: Salomon
mesh_terms: D007536:Isomerism; D010084:Oxidation-Reduction; D010713:Phosphatidylcholines / Q000138:chemical synthesis*; D010743:Phospholipids / Q000138:chemical synthesis*
chemical_list: C416069:1-(9-hydroxy-13-oxotridec-11-enoyl)-2-palmitoylphosphatidylcholine; D010713:Phosphatidylcholines; D010743:Phospholipids