Výsledky vyhledávání - "Sunil V. Pansare"

Synthesis of the diarylindolizidine alkaloid (+)-Fistulopsine B: Application of an organocatalytic Michael addition reaction

Autor: N V G Moorthy, Sunil V. Pansare

Publikováno v: Tetrahedron. 74:1422-1429

The first synthesis of a recently isolated antiproliferative diarylindolizidine alkaloid, (+)-fistulopsine B, was achieved. The synthesis features the use of an organocatalytic ketone-nitrostyrene Michael addition as the key step.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::73609e18b4cc077626d490558daad606
https://doi.org/10.1016/j.tet.2018.01.032

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Functionalization of diazotetronic acid and application in a stereoselective modular synthesis of pulvinone, aspulvinones A–E, G, Q and their analogues

Autor: Amarender Manchoju, Sunil V. Pansare, Lise Desquien, Ritesh A. Annadate

Publikováno v: Organic & Biomolecular Chemistry. 16:6224-6238

A modular synthesis of aspulvinones A, B, C, D, E, G and the recently isolated aspulvinone Q was developed. The methodology features a highly stereoselective aldol condensation of diazotetronic acid with aldehydes to provide 5-arylidene diazotetronat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1d4137be8b7d94ea4f920133310ce587
https://doi.org/10.1039/c8ob01511b

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Synthesis of (–)-Muricatacin and (–)-(R,R)-L-Factor Involving an Organocatalytic Direct Vinylogous Aldol Reaction

Autor: Christopher Cooze, Sunil V. Pansare, Amarender Manchoju

Publikováno v: Synlett. 28:2928-2932

Concise syntheses of the polyketide natural product (–)-muricatacin and (–)-(R,R)-L-factor (natural product enantiomer) were achieved in four steps by employing an organocatalytic asymmetric direct vinylogous aldol reaction of γ-crotonolactone a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6a960b81f58c68fa120bdd4428d771a7
https://doi.org/10.1055/s-0036-1590858

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Biomimetic Organocatalytic Approach to 4-Arylquinolizidine Alkaloids and Application in the Synthesis of (-)-Lasubine II and (+)-Subcosine II

Autor: Sunil V. Pansare, Seerat Virk

Publikováno v: Organic letters. 21(14)

An enantioselective, biomimetic organocatalytic synthesis of 4-arylquinolizidin-2-ones, key intermediates in the synthesis of several Lythraceae alkaloids, was developed. The methodology features S...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1fbda9b6a34afff143214b2ff673e5c6
https://pubmed.ncbi.nlm.nih.gov/31246480

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Catalytic Undirected Intermolecular C–H Functionalization of Arenes with 3-Diazofuran-2,4-dione: Synthesis of 3-Aryl Tetronic Acids, Vulpinic Acid, Pinastric Acid, and Methyl Isoxerocomate

Autor: Amarender Manchoju, Sunil V. Pansare

Publikováno v: Organic Letters. 18:5952-5955

A variety of 3-aryl tetronic acids have been synthesized by an undirected, intermolecular C-H functionalization of arenes with 3-diazofuran-2,4-dione. This methodology featured as a key step in the synthesis of a series of naturally occurring 3-aryl-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a7d5167924cfb0089227a2b0dfd39dfd
https://doi.org/10.1021/acs.orglett.6b03087

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Stereoselective synthesis of E-3-(arylmethylidene)-5-(alkyl/aryl)-2(3H)-furanones by sequential hydroacyloxylation-Mizoroki-Heck reactions of iodoalkynes

Autor: Gopinathan Muthusamy, Sunil V. Pansare

Publikováno v: Organicbiomolecular chemistry. 16(42)

A modular, stereoselective synthesis of E-3-(arylidene)-5-(alkyl/aryl)-2(3H)-furanones was developed. The methodology features regioselective addition of β-aryl acrylic acids to iodoacetylenes to furnish the Z-acyloxy iodoalkenes. A stereoselective

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5ce7d301b1d3924e66878db86c043279
https://pubmed.ncbi.nlm.nih.gov/30325391

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Modular synthesis of allyl vinyl ethers for the enantioselective construction of functionalized quaternary stereocenters

Autor: Gopinathan Muthusamy, Sunil V. Pansare

Publikováno v: RSC Advances. 6:104556-104559

A concise synthesis of 2-t-butoxycarbonyl allyl vinyl ethers by regioselective Petasis methylenation and stereoselective Suzuki–Miyaura cross-coupling reactions of iodoallyl t-butyl oxalates was developed. Ethers with a terminally unsubstituted vin

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4653c1781412bf97c4522449af9304d1
https://doi.org/10.1039/c6ra24284g

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Formal Synthesis of (+)-Lasubine II and (−)-Subcosine II via Organocatalytic Michael Addition of a Ketone to an α-Nitrostyrene

Autor: Sunil V. Pansare, N V G Moorthy, Rajendar Dyapa

Publikováno v: Organic Letters. 17:5312-5315

The first examples of an organocatalytic Michael addition of a ketone to in situ generated α-nitrostyrenes are reported. A suitably functionalized γ-nitroketone obtained from the organocatalyzed Michael addition was converted into (+)-2-epi-lasubin

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bbafecb2faab46590327230eeb130ce7
https://doi.org/10.1021/acs.orglett.5b02677

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