110862-45-8Relevant articles and documents
Potassium Acetate-Catalyzed Double Decarboxylative Transannulation to Access Highly Functionalized Pyrroles
Jia, Chunman,Li, Jun-Kuan,Ma, Jun-An,Tian, Yu-Chen,Xue, Xiao-Song,Zhang, Fa-Guang,Zhou, Biying
, p. 9585 - 9590 (2020/12/21)
The development of new synthetic strategies for the efficient construction of versatile pyrrole pharmacores, especially in an operationally simple and environmentally benign fashion, still remains a momentous yet challenging goal. Here, we report a KOAc-catalyzed double decarboxylative transannulation between readily accessible oxazolones and isoxazolidinediones. This transformation represents a new way for skeletal remodeling by utilizing CO2 moiety as traceless activating and directing groups in both reaction partners. The synthetic value is evidenced by the rapid preparation of a broad spectrum of highly functionalized 3-carbamoyl-4-aryl pyrroles in good to excellent yields with exclusive regio-control, including the important Atorvastatin core.
Inhibitors of Cholesterol Biosynthesis. 3. Tetrahydro-4-hydroxy-6--2H-pyran-2-one Inhibitors of HMG-CoA Reductase. 2. Effects of Introducing Substituents at Positions Three and Four of the Pyrrole Nucleus
Roth, B. D.,Blankley, C. J.,Chucholowski, A. W.,Ferguson, E.,Hoefle, M. L.,et al.
, p. 357 - 366 (2007/10/02)
A series of trans-tetrahydro-4-hydroxy-6--2H-pyran-2 ones and their dihydroxy acids were prepared and tested for their ability to inhibit the enzyme HMG-CoA reductase in vitro.Inhibitory potency was found to increase subtantially when substituents were introduced into positions three and four of the pyrrole ring.A systematic exploration of structure-activity relationships at these two positions led to the identification of a compound ((+)-33, (+)-(4R)-trans-2-(4-fluorophenyl)-5-(1-methylethyl)-N,3-diphenyl-1- -1H-pyrrole-4-carboxamide) with five times the inhibitory potency of the fungal metabolite compactin.