title: Alkyne [2 + 2 + 2]-Cyclotrimerization Approach for Synthesis of 6,7-Cyclopropylallocolchicinoids.
abstract: Employing a cobalt-catalyzed [2 + 2 + 2] alkyne cyclotrimerization as the final step, the short and efficient synthesis of cyclopropylallocolchicinoid and its analogues having functional group variations at C9 and/or C10 and C11 of ring C has been accomplished.
authors.affiliation: Division of Organic Chemistry, CSIR-National Chemical Laboratory , Dr. Homi Bhabha Road, Pune, Maharashtra 411008, India.
authors.forename: Atul A
authors.initials: AA
authors.lastname: More
authors.affiliation: Division of Organic Chemistry, CSIR-National Chemical Laboratory , Dr. Homi Bhabha Road, Pune, Maharashtra 411008, India.
authors.forename: Chepuri V
authors.initials: CV
authors.lastname: Ramana
mesh_terms: D000480:Alkynes / Q000737:chemistry*; D002384:Catalysis; D003035:Cobalt / Q000737:chemistry; D003078:Colchicine / Q000031:analogs & derivatives / Q000138:chemical synthesis* / Q000737:chemistry; D003500:Cyclization; D015394:Molecular Structure
chemical_list: D000480:Alkynes; D003035:Cobalt; D003078:Colchicine