Zobrazeno 1 - 10
of 43
pro vyhledávání: '"Sukhendu B. Mandal"'
Publikováno v:
ARKIVOC, Vol 2003, Iss 9, Pp 75-86 (2004)
Externí odkaz:
https://doaj.org/article/7fffeead8f5d44f0a11242ccb9f6e81d
Publikováno v:
The Journal of Organic Chemistry. 80:1136-1148
Application of intramolecular 1,3-dipolar nitrone cycloaddition reaction on carbohydrate-derived precursors containing an olefin functionality at C-1 or C-3 or C-5 and a nitrone moiety at C-2 or C-3 as appropriate has resulted in the formation of str
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1f80ce4e708e135d39e32880e2e9d439
https://doi.org/10.1021/jo502672x
https://doi.org/10.1021/jo502672x
Publikováno v:
Tetrahedron Letters. 55:5648-5651
A simple, convenient and efficient protocol for the construction of an array of glycospiro-pyrroloisoquinolines using isoquinolinium ylide and a carbohydrate-derived exocyclic olefin in the presence of Cu(OTf) 2 –Et 3 N catalytic system is describe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1a70b8585aad20ced22a3ad097da1040
https://doi.org/10.1016/j.tetlet.2014.08.076
https://doi.org/10.1016/j.tetlet.2014.08.076
Publikováno v:
RSC Adv.. 4:29542-29548
Under acidic conditions, the reaction of pent-4-enofuranosides with various nucleophiles of mostly alcohol origin furnished bisglycosylated products along with open-chain ketoacetals and monoglycosylated products depending upon the reagents and react
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ac8b204102e61e958f207cdd29022b1d
https://doi.org/10.1039/c4ra03340j
https://doi.org/10.1039/c4ra03340j
Autor:
Upendra Kumar Daravath, Divya Goyal, Piyali Deb Barman, Asish Kumar Banerjee, Sukhendu B. Mandal, Ishita Sanyal
Publikováno v:
Tetrahedron Letters. 54:3801-3804
1,3-Dipolar cycloaddition reaction of a carbohydrate-derived exocyclic olefin with in situ generated non-stabilized azomethine ylides, formed by the reaction of sarcosine (a secondary α-amino acid) with isatins, acenaphthenedione and cycloalkanones
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8b99cddc0659731cc8872aeb740e4097
https://doi.org/10.1016/j.tetlet.2013.05.027
https://doi.org/10.1016/j.tetlet.2013.05.027
Deoxygenation/dimerization of sugar derivatives with BF3·Et2O–Et3SiH: synthesis of a β-isonucleoside
Publikováno v:
Tetrahedron Letters. 53:4929-4932
Lewis acid-Et 3 SiH induced deoxygenation of anomeric carbon of sugars generates tetrahydrofuran derivatives, accompanied by hitherto unknown dimeric products. If the reagent addition steps are reversed, tetrahydrofuran derivatives are obtained as th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b1e2380ab6eba767756ea552482efba7
https://doi.org/10.1016/j.tetlet.2012.06.121
https://doi.org/10.1016/j.tetlet.2012.06.121
Publikováno v:
Organic Letters. 14:4186-4189
In 1-deoxy-xylofuranose derivatives possessing a good leaving group at 2-C, participation of allyloxy and propargyloxy substituents at 5-C results in loss of the 2-C substituent and attack of various nucleophiles at 5-C of the oxonium intermediate. S
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dc14f53c1cde642aa66c008b96c5412a
https://doi.org/10.1021/ol301851q
https://doi.org/10.1021/ol301851q
Publikováno v:
Tetrahedron Letters. 52:6767-6771
Glucose-derived alkenes were homologated via chain elongation to afford higher sugars by the application of cross metathesis with an alkene followed by Sharpless asymmetric dihydroxylation. Heptose, octose, nonose, and decose derivatives were expedit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::08aeac3ae1b8e418b9edfd3b8b150e22
https://doi.org/10.1016/j.tetlet.2011.10.024
https://doi.org/10.1016/j.tetlet.2011.10.024
Publikováno v:
The Journal of Organic Chemistry. 72:7427-7430
Carbohydrate-derived substrates having (i) C-5 nitrone and C-3-O-allyl, (ii) C-4 vinyl and a C-3-O-tethered nitrone, and (iii) C-5 nitrone and C-4-allyloxymethyl generated tetracyclic isoxazolidinooxepane/-pyran ring systems upon intramolecular nitro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aba941a90ce12e444604f84a56e0a85a
https://doi.org/10.1021/jo070846m
https://doi.org/10.1021/jo070846m
Publikováno v:
Tetrahedron Letters. 48:1563-1566
Introduction of an allyl functionality at C-3 of 1,2:5,6-di- O -isopropylidene-α- d -glucofuranose followed by olefination at C-5 and C-6 provided 1,6-diene 5 which, upon ring closing metathesis and subsequent functional group manipulation, furnishe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e97b0bc2f3b8e5bed147a131d0a0549a
https://doi.org/10.1016/j.tetlet.2007.01.016
https://doi.org/10.1016/j.tetlet.2007.01.016