107679-25-4Relevant articles and documents
Reagent-Controlled α-Selective Dehydrative Glycosylation of 2,6-Dideoxy Sugars: Construction of the Arugomycin Tetrasaccharide
Bennett, Clay S.,McDermott, Luca,Romeo, Joseph R.
, p. 3649 - 3654 (2020)
The first synthesis of the tetrasaccharide fragment of the anthracycline natural product Arugomycin is described. A reagent controlled dehydrative glycosylation method involving cyclopropenium activation was utilized to synthesize the α-linkages with complete anomeric selectivity. The synthesis was completed in 20 total steps, and in 2.5% overall yield with a longest linear sequence of 15 steps.
Heterocyclic sodium/proton exchange inhibitors and method
-
Page/Page column 52, (2010/02/11)
Heterocyclic are provided which are sodium/proton exchange (NHE) inhibitors which have the structure wherein n is 1 to 5; X is N or C—R5 wherein R5 is H, halo, alkenyl, alkynyl, alkoxy, alkyl, aryl or heteroaryl; Z is a heteroaryl gorup, R1, R2, R3 and R4 are as defined herein, and where X is N. R1 is preferably aryl or heteroaryl, and are useful as antianginal and cardioprotective agents. In addition, a method is provided for preventing or treating angina pectoris, cardiac dysfunction, myocardial necrosis, and arrhythmia employing the above heterocyclic derivatives.
Tandem [4+2]/[3+2] cycloadditions of nitroalkenes. 9. Synthesis of (-)-rosmarinecine
Denmark, Scott E.,Thorarensen, Atli,Middleton, Donald S.
, p. 8266 - 8277 (2007/10/03)
(-)-Rosmarinecine (2) is the necine base portion of the pyrrolizidine alkaloid (-)-rosmarinine. (-)Rosmarinecine is a representative of the group of pyrrolizidines that show a cis relationship between adjacent stereocenters C(1), C(7), and C(7a), in addition to a highly oxygenated skeleton. (-)-Rosmarinecine (2) has been synthesized in eight steps and 14.8% overall yield, as an illustration of a general approach for the construction of pyrrolizidines having this stereochemical feature. The key step in the asymmetric synthesis is a Lewis acid-promoted, tandem inter-[4+2]/intra-[3+2] cycloaddition between a fumaroyloxy nitroalkene and a chiral vinyl ether.