Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Peddabuddi Gopal"'
Publikováno v:
The Journal of Organic Chemistry. 77:8933-8945
We systematically explored a transannular Michael reaction cascade for stereoselective synthesis of polycyclic systems. Both E,Z- and E,E-1,7-bis-enones in the form of 14-membered macrocyclic lactones underwent transannular cyclization to give polycy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::318109978d6dc3cf52ca215f6d5236c0
https://doi.org/10.1021/jo301287z
https://doi.org/10.1021/jo301287z
Publikováno v:
Tetrahedron Letters. 51:5736-5739
A convergent stereoselective total synthesis of (+)-anamarine via cross-metathesis (CM) protocol starting from 2-butyn-1,4-diol and vinyl lactone is reported. Other key features of the strategy include the use of Sharpless asymmetric epoxidation, Sha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::16544d96cb3b9bae13cbd77855e8250d
https://doi.org/10.1016/j.tetlet.2010.08.077
https://doi.org/10.1016/j.tetlet.2010.08.077
Publikováno v:
Tetrahedron Letters. 50:6298-6302
The first stereoselective total synthesis of synargentolide A isolated from Syncolostemon argenteus has been achieved from commercially available (R)-benzyl glycidyl ether using Sharpless asymmetric epoxidation and cross-metathesis reactions as the k
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1dc6ad6ae0c8df29fd81f6b5f4739614
https://doi.org/10.1016/j.tetlet.2009.08.109
https://doi.org/10.1016/j.tetlet.2009.08.109
Publikováno v:
Tetrahedron: Asymmetry. 20:2205-2210
The synthesis of the marine natural products, siphonarienal, siphonarienone, and pectinatone is described employing desymmetrization strategy to create three consecutive stereogenic centers. The key intermediate 7 was made by asymmetric hydroboration
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::46f3e133323d706dff9e51badadf52cb
https://doi.org/10.1016/j.tetasy.2009.08.021
https://doi.org/10.1016/j.tetasy.2009.08.021
Publikováno v:
Synthesis. 2009:3301-3304
Natural kurzilactone (5R,7S) and its (5S,7R)-enantiomer were synthesized by a convergent approach using a diastereoselective Mukaiyama aldol reaction to construct the anti diol unit. Finally, a ring-closing metathesis reaction led to the target molec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9eaebc58981b045d480aafc975f8486d
https://doi.org/10.1055/s-0029-1216936
https://doi.org/10.1055/s-0029-1216936
Publikováno v:
Tetrahedron: Asymmetry. 20:1493-1499
The total synthesis of lactone 1 has been described. The convergent asymmetric synthesis relies on the use of an Evans' syn-aldol, chain extension with lithio tert-butyl acetate, and the stereoselective reduction of a ketone as the key reactions.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2e260b9716bf03b1972f0483a227b49a
https://doi.org/10.1016/j.tetasy.2009.06.008
https://doi.org/10.1016/j.tetasy.2009.06.008
Publikováno v:
Helvetica Chimica Acta. 91:2240-2246
A stereoselective formal synthesis of diastereoisomers of 1,3-polyol/α-pyrone antifungal natural products isolated from Ravensara anisata has been achieved involving epoxide opening and asymmetric allylation as key steps.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0a815cca552d9613da7df46a3f2631f7
https://doi.org/10.1002/hlca.200890243
https://doi.org/10.1002/hlca.200890243
Publikováno v:
Synthetic Communications. 37:1495-1502
A general synthetic approach to both enantiomers, (R)- and (S)-massoialactones, has been devised from commercially available (S)-butane-1,2,4-triol.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2101a53af2f7e2a8b10fafa5d1ef44e5
https://doi.org/10.1080/00397910701229107
https://doi.org/10.1080/00397910701229107
Autor:
Rangavajjula Srinivas, M. Bhikshapathi, Peddabuddi Gopal, Gowravaram Sabitha, Jhillu S. Yadav
Publikováno v:
Helvetica Chimica Acta. 94:119-121
Bismuth(III) chloride was found to be an efficient catalyst for the transesterification of a variety of β-keto esters with a wide range of alcohols to afford transesterified products in good to high yields in short reaction times (see Table).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b3a39b85c3c683dfc6751764f218948a
https://doi.org/10.1002/hlca.201000113
https://doi.org/10.1002/hlca.201000113
Publikováno v:
Organic letters. 13(20)
A 12-step synthesis of the ABC carbocyclic core of norzoanthamine is described. It features an organocatalytic asymmetric intramolecular aldolization to set the stereochemistry of the entire molecule, a fragment coupling by selective alkylation of a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::24f21f70a0168fcf324b8de4e51257b6
https://pubmed.ncbi.nlm.nih.gov/21961953
https://pubmed.ncbi.nlm.nih.gov/21961953