60770-66-3Relevant academic research and scientific papers
Enantio- and Diastereoselective, Complete Hydrogenation of Benzofurans by Cascade Catalysis
Gallagher, Timothy,Glorius, Frank,Hu, Tianjiao,Moock, Daniel,Wagener, Tobias
supporting information, p. 13677 - 13681 (2021/05/10)
We report an enantio- and diastereoselective, complete hydrogenation of multiply substituted benzofurans in a one-pot cascade catalysis. The developed protocol facilitates the controlled installation of up to six new defined stereocenters and produces architecturally complex octahydrobenzofurans, prevalent in many bioactive molecules. A unique match of a chiral homogeneous ruthenium-N-heterocyclic carbene complex and an in situ activated rhodium catalyst from a complex precursor act in sequence to enable the presented process.
Pd-catalyzed intramolecular Heck reaction for the synthesis of 2-methylbenzofurans
Zhou,Shi, Yuxing,Zhu, Xueyan,Zhang, Peng
, p. 2005 - 2008 (2019/07/03)
A new strategy for the synthesis of 2-Methylbenzofurans via the intramolecular Heck reaction has been developed. This efficient palladium-catalyzed system showed good catalytic activity. Various substituted 2-methylbenzofurans could be afforded in good to excellent yields.
Direct Synthesis of 2-Methylbenzofurans from Calcium Carbide and Salicylaldehyde p -Tosylhydrazones
Fu, Rugang,Li, Zheng
supporting information, p. 2342 - 2345 (2018/04/30)
A new methodology for the construction of methyl-substituted benzofuran rings from the reactions of calcium carbide with salicylaldehyde p-tosylhydrazones/2-hydroxyacetophenone p-tosylhydrazones is described. Various 2-methylbenzofurans and 2,3-dimethylbenzofurans could be obtained in satisfactory yield by using a cuprous chloride catalyst. The advantages of this protocol include the use of a readily available and easy-to-handle acetylene source and simple workup procedure.
An efficient solid-phase synthesis of substituted benzofuran using selenium-bound resin
Zhang, Yin Jun,Wang, Yu Guang
experimental part, p. 212 - 216 (2012/07/13)
A very efficient solid-phase synthesis of substituted benzofuran using polymer-supported selenium resin is described. The advantages of the new method are good yields, high purity, straightforward operations, broad range and high diversity of products, lack of odor, and good stability of the resins. The easy work-up procedure makes the method suitable for building parallel libraries.
Hypoglycemic imidazoline compounds
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Page/Page column 24, (2010/02/05)
This invention relates to certain novel imidazoline compounds and analogues thereof, to their use for the treatment of diabetes, diabetic complications, metabolic disorders, or related diseases where impaired glucose disposal is present, to pharmaceutical compositions comprising them, and to processes for their preparation.
Hypoglycemic imidazoline compounds
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Page 39, (2010/11/29)
This invention relates to certain novel imidazoline compounds and analogues thereof, to their use for the treatment of diabetes, diabetic complications, metabolic disorders, or related diseases where impaired glucose disposal is present, to pharmaceutical compositions comprising them, and to processes for their preparation. The compounds have the following formula: whereinX is -O-, -S-, or -NR5-;R5 is hydrogen, C1-8 alkyl, or an amino protecting group;R1, R1', R2, and R3 are independently hydrogen or C1-8 alkyl;R1 and R2 optionally together form a bond and R1' and R3 are independently hydrogen or C1-8 alkyl;R1 and R2 optionally combine together with the carbon atoms to which they are attached form a C3-7 carbocyclic ring and R1' and R3 are independently hydrogen or C1-8 alkyl;R1 and R1' together with the carbon atom to which they are attached optionally combine to form a C3-7 spirocarbocyclic ring and R2 and R3 are independently hydrogen or C1-8 alkyl;R2 and R3 together with the carbon atom to which they are attached optionally combine to form a C3.7 spirocarbocyclic and R1 and R1' are independently hydrogen or C1-8 alkyl;n is 0, 1, or 2;m is 1 or2; 2;m' is 0, 1, or 2;q' is 0,1,2,3,4, or 5;R4 isY is -O-, -S-, or -NR8-;Y' is -O- or -S-;R6 and R7 are independently hydrogen, C1-8 alkyl, C3-7 cycloalkyl, C1-8 alkoxy, C1-8 alkylthio, halo C1-8 alkylthio, C1-8 alkylsulfinyl, C1-8 alkylsulfonyl. C3-7 cycloalkoxy, aryl-C1-8 alkoxy, halo, halo-C1-8 alkyl, halo-C1-8 alkoxy, nitro, -NR10R11, -CONR10R11, aryl C1-8 alkyl, optionally substituted heterocyclyl, optionally substituted phenyl, optionally substituted naphthyl, optionally halo substituted acylamino, cyano, hydroxy, COR12, halo C1-8 alkylsulfinyl, or halo C1-8 alkylsulfonyl, or alkoxyalkyl of the formulaCH3(CH2)p-O-(CH2)q-O-; wherep is 0, 1, 2, 3, or 4; andq is 1, 2, 3, 4, or 5;R12 is C1-8 alkyl or optionally substituted phenyl;R8 is hydrogen, C1-8 alkyl, halo-C1-8 alkyl, optionally substituted phenyl, optionally substituted heterocyclyl, COO C1-8 alkyl, optionally substituted COaryl, COC1-8 alkyl, SO2C1-8 alkyl, optionally substituted SO2 aryl, optionally substituted phenyl-C1-8 alkyl, CH3(CH2)p-O-(CH2)q-O-;R9 is hydrogen, halo, C1-8 alkyl, halo C1-8 alkyl, C1-8 alkylthio, halo C1-8 alkylthio, C3-7 cycloalkylthio, optionally substituted arylthio or heteroarylthio, C1-8 alkoxy, C3-8 cycloalkoxy, optionally substituted aryloxy, optionally substituted heteroaryloxy, or optionally substituted aryl or heteroaryl, C3-7 cycloalkyl, halo C3-7 cycloalkyl, C3-7 cycloalkenyl, cyano, COOR10,CONR10R11 or NR10R11,C2-6 alkenyl, optionally substituted heterocyclyl, optionally substituted aryl C1-8 alkyl, optionally substituted heteroaryl C1-8 alkyl in which the alkyl group can be substituted by hydroxy, or C1-8 alkyl substituted by hydroxy,R10 and R11 are independently hydrogen, C1-8 alkyl, optionally substituted aryl C1-8 alkyl, optionally substituted phenyl, or R10 and R11 together with the nitrogen atom to which they are attached may combine to form a ring with up to six carbon atoms which optionally may be substituted with up to two C1-8 alkyl groups or one carbon atom may be replaced by oxygen or sulfur;R14 and R16 are independently hydrogen, halo, C1-8 alkyl, C3-7 cycloalkyl, C3-7 cycloalkoxy, C3-7 cycloalkylC1-8 alkoxy, halo-C1-8 alkyl, halo-C1-8 alkoxy, C1-8 alkoxy, carbo(C1-8)alkoxy, optionally substituted aryl, or optionally substituted heteroaryl;R15 and R17 are independently hydrogen, halo, C1-8 alkoxy, C3-7-cycloalkyl, C3-7 cycloalkylC1-8 alkoxy, C1-8 alkyl, C3-7 cycloalkoxy, hydroxy, halo C1-8 alkoxy, carbo(C1-8)alkoxy, optionally substituted phenyl, optionally substituted phenyl-C1-8 alkyl, optionally substituted phenyloxy, optionally substituted phenyl-C1-8 alkoxy, (tetrahydropyran-2-yl)methoxy, C1-8 alkyl-S(O)m-, optionally substituted aryl-C1-8 alkyl-S(O)m·-, CH3(CH2)p-Z1-(CH2)q-Z2-, or Z3-(CH2)q'-Z2-;Z1 and Z2 are independently abond, O, S, SO, SO2, sulphoximino, or NR10; andZ3 is hydroxy, protected hydroxy, NR10 R11, protected amino, SH or protected SH; ???provided that when R1, R1', R2 and R3 are all hydrogen; n is 0; R4 is naphthyl; and R14 R15 and R16, or R15, R16 and R17 are all hydrogen, then R17 or R14, respectively, is other than halo, methoxy, or C1-6 alkyl. ???or a pharmaceutically acceptable salt or ester thereof.
Hypoglycemic imidazoline compounds
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, (2008/06/13)
This invention relates to certain novel imidazoline compounds and analogues thereof, to their use for the treatment of diabetes, diabetic complications, metabolic disorders, or related diseases where impaired glucose disposal is present, to pharmaceutical compositions comprising them, and to processes for their preparation.
Novel substituted 3H-1,2,3,5-oxathiadiazole 2-oxides useful as anthihyperglycemic agents
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, (2008/06/13)
This invention relates to novel substituted 3H-1,2,3,5-oxathiadiazole 2-oxides, to the processes for their preparation, to methods for using the compounds, and to pharmaceutical compositions thereof. The compounds have pharmaceutical properties which render them beneficial for the treatment of diabetes mellitus and associated conditions.
