title: Studies on new dehydropeptidase inhibitors. IV. Chemical transformation of WS1358 compounds and an improved synthesis of WS1358A1.
abstract: The structures of compounds 3 (and 4) and 5 (and 6) derived from the natural products WS1358A1 (1) (and B1 (2)) have been determined by their spectroscopic evidence. By taking advantage of these transformations, an improved synthesis of A1 (1, racemate) has been achieved.
authors.affiliation: Exploratory Research Laboratories, Fujisawa Pharmaceutical Co., Ltd., Ibaraki, Japan.
authors.forename: I
authors.initials: I
authors.lastname: Uchida
authors.forename: S
authors.initials: S
authors.lastname: Hashimoto
authors.forename: T
authors.initials: T
authors.lastname: Iwamoto
authors.forename: S
authors.initials: S
authors.lastname: Takase
authors.forename: M
authors.initials: M
authors.lastname: Hashimoto
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D002851:Chromatography, High Pressure Liquid; D004150:Dipeptidases / Q000037:antagonists & inhibitors*; D005977:Glutarates / Q000138:chemical synthesis*
chemical_list: D005977:Glutarates; C063283:WS 1358A1; C063284:WS 1358B1; D004150:Dipeptidases; C038937:dipeptidase