title: Towards enantioselective synthesis of tryptophan-derived alkaloids.
abstract: Tryptamine was subjected to a series of reactions with derivatives of L-Ala, L-Val that ended with final diketopiperazines 9 and 10, having (R) configuration on the newly created, via 1,4-chirality transfer, stereogenic center. On the other hand, when L-Pro was used the opposite chirality sense was formed at this position.
authors.affiliation: Faculty of Chemistry, Warsaw University, Pasteur St. 1, 02-093, Warsaw, Poland.
authors.forename: Aleksandra
authors.initials: A
authors.lastname: Siwicka
authors.forename: Anna
authors.initials: A
authors.lastname: Zawadzka
authors.forename: Krystyna
authors.initials: K
authors.lastname: Wojtasiewicz
authors.forename: Jan K
authors.initials: JK
authors.lastname: Maurin
authors.forename: Andrzej
authors.initials: A
authors.lastname: Leniewski
authors.forename: Zbigniew
authors.initials: Z
authors.lastname: Czarnocki
mesh_terms: D000596:Amino Acids / Q000737:chemistry; D026121:Indole Alkaloids / Q000138:chemical synthesis* / Q000737:chemistry*; D008958:Models, Molecular; D015394:Molecular Structure; D013237:Stereoisomerism; D014364:Tryptophan / Q000737:chemistry*
chemical_list: D000596:Amino Acids; D026121:Indole Alkaloids; D014364:Tryptophan