Palladium-catalyzed coupling of heteroaromatic triflates with acetylene and its application for a dynemicin a intermediate
摘要:
An acetylene moiety was introduced to a carbonyl carbon of amide group via its triflate in the presence of palladium catalyst, The reaction proceeded smoothly under mild conditions. Utilizing this methodology, a model compound of dynemicin A bearing acetylene group was synthesized.
Palladium-catalyzed coupling of heteroaromatic triflates with acetylene and its application for a dynemicin a intermediate
作者:Takaaki Okita、Minoru Isobe
DOI:10.1016/0040-4020(95)00118-r
日期:1995.3
An acetylene moiety was introduced to a carbonyl carbon of amide group via its triflate in the presence of palladium catalyst, The reaction proceeded smoothly under mild conditions. Utilizing this methodology, a model compound of dynemicin A bearing acetylene group was synthesized.
Synthesis of the pentacyclic intermediate for dynemicin a and unusual formation of spiro-oxindole ring
作者:Takaaki Okita、Minoru Isobe
DOI:10.1016/s0040-4020(01)89417-5
日期:1994.1
A pentacyclic compound was synthesized as an important intermediate of antitumor antibiotic dynemicins. The key step was the intramolecular Heck reaction using catalytic Pd reagent. During the course of the synthetic studies, an unusual spiro ring compound was found to be produced via intramolecular conjugate addition.