Zobrazeno 1 - 10
of 151
pro vyhledávání: '"Ajit C. Kunwar"'
Publikováno v:
The Journal of organic chemistry.
The first asymmetric total synthesis of (1
Autor:
Kanakaraju Marumudi, Shivalal Banoth, Utkal Mani Choudhury, Debendra K. Mohapatra, Ajit C. Kunwar
Publikováno v:
Synlett. 32:685-688
A concise and convergent stereoselective synthesis of curvulone B is described. The synthesis utilized a tandem isomerization followed by C–O and C–C bond-forming reactions following Mukaiyama-type aldol conditions for the construction of the tra
Autor:
Kanakaraju Marumudi, Janardhan Gaddam, Debendra K. Mohapatra, Jhillu S. Yadav, G. Sudhakar Reddy, Ajit C. Kunwar
Publikováno v:
Organic & Biomolecular Chemistry. 17:5601-5614
The first asymmetric total synthesis and stereochemical assignments of 10-membered macrolactones relgro and 10'-oxorelgro are disclosed. To this end, palladium-catalyzed Stille coupling, the Mitsunobu reaction, ring-closing metathesis, EDCI promoted
Autor:
Nagula Chandramouli, Purushotham P. Reddy, A. V. S. Sarma, Ajit C. Kunwar, Marumudi Kanakaraju, Ramesh Adepu, Gangavaram V. M. Sharma
Publikováno v:
Tetrahedron. 74:6095-6106
The present study describes the synthesis of new C-linked carbo-β-amino acids [β-Caa(1,2-ddx)], with a 1,2-dideoxy D-xylo furanoside side chain (a tetrahydro furan derivative). The stereochemistry at the newly created amine centers was determined b
Autor:
Debendra K. Mohapatra, Kanakaraju Marumudi, Ajit C. Kunwar, Jhillu S. Yadav, Suresh Kanikarapu
Publikováno v:
Organic Letters. 19:4167-4170
The first asymmetric total synthesis of two possible diastereomers (4S,5R)-4,8-dihydroxy-3,4-dihydrovernoniyne 5 and (4S,5S)-4,8-dihydroxy-3,4-dihydrovernoniyne 5a is accomplished. Salient features of the synthesis involve Cadiot–Chodkiewicz coupli
Autor:
Kanakaraju Marumudi, Debendra K. Mohapatra, J. S. Yadav, Ajit C. Kunwar, Suresh Kanikarapu, Saurabh Maity
Publikováno v:
The Journal of Organic Chemistry. 82:4561-4568
The first asymmetric total synthesis of the putative structure of diplopyrone was achieved in 17 linear steps starting from cis-1,4-butene-diol. The synthetic route features iodine-catalyzed tandem isomerization followed by C–O and C–C bond forma
Autor:
Ajit C. Kunwar, Kallaganti V. S. Ramakrishna, Sirisha Katukuri, Prashanth Thodupunuri, Hans-Jörg Hofmann, A. V. S. Sarma, Gangavaram V. M. Sharma
Publikováno v:
The Journal of Organic Chemistry. 82:2018-2031
Present study describes the synthesis and conformational analysis of β-peptides from C-linked carbo-β-amino acids [β-Caa(l)] with a d-lyxo furanoside side chain and β-hGly in 1:1 alternation. NMR and CD investigations on peptides with an (S)-β-C
Autor:
Gangavaram V. M. Sharma, Bommeda Sudhakar, Marumudi Kanakaraju, Ajit C. Kunwar, Gonuguntla Anjaiah, Deepak Chatterjee
Publikováno v:
Organic & Biomolecular Chemistry. 14:503-515
The important role of side chains in the stabilization of helical folds in peptidic foldamers containing C-linked carbo-β-amino acids (β-Caa), an interesting class of β-amino acids, with carbohydrate side chains has been extensively elaborated. As
Autor:
H. Cho, Arun K. Ghosh, Subhash Ghosh, Tushar Kanti Chakraborty, Ajit C. Kunwar, M. H. V. Ramana Rao
Publikováno v:
Tetrahedron letters. 41(15)
Conformationally constrained molecular frameworks of the 2,5-anhydro sugar diacid ( 9 ) and 2,5-anhydro sugar diamines ( 10 , 11 ) were used to construct architecturally beautiful novel C 2 symmetric peptidomimetics 1 – 8 . Although none of these c
Autor:
Ajit C. Kunwar, A. Venkateswarlu, Basi V. Subba Reddy, Marumudi Kanakaraju, Yellala Venkata Rami Reddy
Publikováno v:
European Journal of Organic Chemistry. 2015:5389-5392
A fluoride-induced termination of Prins cyclization has been observed using a tethered alkyne and stoichiometric amounts of AgSbF6 and found to generate a novel series of 6-fluoro-1-aryl-hexahydro-1H-isochromene derivatives in good yields with excell