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作者:Sandip R. Khobare , Vikas S. Gajare ...
来源:[J].Tetrahedron Letters(IF 2.397), 2015, Vol.56 (17), pp.2207-2210
摘要:Abstract(#br)Total synthesis of 2,5-disubstituted piperidine alkaloids, 5-hydroxyhomopipecolic acid ( 1 ) and 5-hydroxysedamine ( 2 ) was accomplished in overall high yields with a high level of 1,4-asymmetric induction. The ring opening of α-aminobutyrolactone, subsequent 1...
作者:Sandip R. Khobare , Vikas Gajare ...
来源:[J].Carbohydrate Research(IF 2.044), 2016, Vol.435, pp.1-6
摘要:Abstract(#br)A unique oxidative dehydration-oxidation of polyhydroxy-oxime ( 7 ) to the corresponding ketonitrile ( 8 ) in one pot is reported for the first time in carbohydrate literature. Key ketonitrile intermediate ( 8 ) upon palladium hydroxide mediated cascade reaction affo...
作者:Sandip R. Khobare , B. Malavika ...
来源:[J].Tetrahedron Letters(IF 2.397), 2015, Vol.56 (24), pp.3743-3746
摘要:Abstract(#br)A concise synthesis of (2 R ,4 R )-4-hydroxyproline ( 1 ) and (2 S ,4 S )-4-hydroxyproline ( 2 ) has been developed in enantiomerically pure form from commercially available starting materials with excellent diastereoselectivity. The tightly bound chelation controlle...
作者:Sandip R. Khobare , Rajender Datrika ...
来源:[J].Tetrahedron Letters(IF 2.397), 2015, Vol.56 (48), pp.6659-6663
摘要:Abstract(#br)Diversity oriented concise asymmetric syntheses of l -2,3- trans -3,4- cis -dihydroxyproline and (3 S ,5 S )-3,4,5-trihydroxypiperidine have been developed from ( R )-glycidol. The key step of the synthesis is Sharpless asymmetric dihydroxylation on enantiomerically ...
作者:Sandip R. Khobare , Rajender Datrika ...
来源:[J].Tetrahedron Letters(IF 2.397), 2016, Vol.57 (13), pp.1486-1488
摘要:Abstract(#br)A concise stereoselective synthesis of (+)-1-deoxy-6- epi -castanospermine has been developed through stereoselective approach from the chiral precursor R -Glycidol. The key steps in the synthesis involve Grignard reaction through Weinreb amide, followed by Sharpless...
作者:Sandip R. Khobare , Vikas S. Gajare ...
来源:[J].Tetrahedron Letters(IF 2.397), 2016, Vol.57 (12), pp.1351-1353
摘要:Abstract(#br)Highly stereoselective total syntheses of polyhydroxylated piperidines d -fagomine and 2- epi -fagomine have been developed starting from 3,4,6-tri- O -benzyl- d -glucal which is a derivative of d -Glucose. Key steps in the synthesis of these azasugars involved N -Bo...
作者:Sandip R. Khobare , Vikas S. Gajare ...
来源:[J].Tetrahedron: Asymmetry(IF 2.115), 2016, Vol.27 (14-15), pp.603-607
摘要:Abstract(#br)A concise total synthesis of ( R )-(−)-phoracantholide I 1 and ( S )-(+)-phoracantholide I 2 has been developed from ( R )-(+)-γ-valerolactone 6 . The key steps in the synthesis of these macrolides involved enzymatic reduction of Levulinic ester 4 by asymmetric ...
作者:Sandip R. Khobare , Vikas S. Gajare ...
来源:[J].Tetrahedron Letters(IF 2.397), 2013, Vol.54 (23), pp.2909-2912
摘要:Abstract(#br)Diastereoselective total synthesis of 3,6-disubstituted piperidine alkaloids, epi -pseudoconhydrine ( 1 ) and pseudoconhydrine ( 2 ) has been developed starting from enantiopure ( S )-epichlorohydrin. The key steps in the synthesis of these alkaloids involved α-...
作者:Sandip R. Khobare , U. K. Syam Kumar ...
来源:[J].Synthetic Communications(IF 1.06), 2015, Vol.45 (22), pp.2576-2582
摘要:Abstract(#br)A dehydrative annulation strategy involving an intramolecular ring closure under a Mitsunobu-type reaction condition has been used for the construction of octahydroindolizine framework successfully. This strategy that was reported to be unsuccessful when applied...

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