88449-50-7Relevant articles and documents
Synthesis of N-benzyl-des-D-ring lamellarin K via an acyl-Claisen/Paal-Knorr approach
Dittrich, Nora,Pilkington, Lisa I.,Leung, Euphemia,Barker, David
, p. 1881 - 1894 (2017/03/11)
Lamellarin K is a complex pyrrole natural product and member of the lamellarin family – a group of natural products known for their potent biological activities, such as, antiproliferative activity and inhibition of P-gp mediated drug efflux pumps. We herein describe the synthesis of the N-benzyl-des-D ring analogue of lamellarin K using a route that centres on an acyl-Claisen reaction to eventually prepare a highly-functionalised 1-aryl-4-methyl-1,4-diketone. Paal-Knorr pyrrole formation using this diketone undergoes auto-oxidation to give a fully-substituted 5-formyl pyrrole which was converted into the natural lactone B ring. Antiproliferative testing of the N-benzyl-des-D ring analogue gave an IC50 of 2.63?μM against the MDA-MB-231 breast cancer cell line.
Novel hybrids from lamellarin D and combretastatin A 4 as cytotoxic agents
Shen, Li,Yang, Xiaochun,Yang, Bo,He, Qiaojun,Hu, Yongzhou
scheme or table, p. 11 - 18 (2010/03/03)
A new series of hybrids of lamellarin D and combretastatin A 4, 1,2-diphenyl-5,6-dihydropyrrolo [2,1-a] isoquinolines, were designed as cytotoxic agents based on principles of combination in medicinal chemistry and taking the parent compounds' different anti-proliferative mechanisms into consideration. Twenty-two novel hybrids were synthesized through a convenient route, with a key step of core pyrrole formation and evaluated for their anti-proliferative activities in vitro against K-562, A-549, SMMC-7721, SGC-7901 and HCT-116 cancer cell lines. The results showed that some hybrids had good anti-proliferative activities in low IC50 ranges.
