- Synthesis of 1,4-dihydro-2H-3,1-benzoxazin-2-ones by hydriodic acid-mediated cyclization of t-butyl 2-vinylphenylcarbamates.
[作者:Kobayashi, Kazuhiro;Fukamachi, Shuhei;Konishi, Hisatoshi;,期刊:Heterocycles, 页码:2301-2307 , 文章类型: 研究论文,,卷期:2008年75-9]
- A two-step facile synthesis of 4,4-disubstituted 1,4-dihydro-2H-3,1-benzoxazin-2-ones starting from a-substituted 2-aminostyrenes was described. The method involved the hydriodic acid-mediated cyclization of t-Bu 2-viny...
- Peroxisome proliferator-activated receptor (PPAR) agonists with 3,4-dihydro-2H-benzo[e][1,3]oxazine and 2,3,4,5-tetrahydrobenzo[f][1,4]oxazepine skeletons: effects of cyclization of linker moiety on PPAR-agonistic activity.
[作者:Ohgane, Kenji;Kasuga, Jyun-ichi;Ohyama, Takuji;Hirakawa, Yuko;Morikawa, Kosuke;Makishima, Makoto;Hashimoto, Yuichi;Miyachi, Hiroyuki;,期刊:Heterocycles, 页码:2187-2192 , 文章类型: 研究论文,,卷期:2008年75-9]
- Conformationally restricted heterocyclic derivs. of KCL ((S)-2-{4-methoxy-3-[4-(trifluoromethyl)benzylcarbamoyl]benzyl}butanoic acid), which exhibit selective PPARa-agonistic activity, were prepd. to examine the signific...
- Tungstophosphoric acid supported on titania as an eco-friendly, green and reusable catalyst for the solvent-free Hantzsch multi-component condensation.
[作者:Rafiee, Ezzat;Eavani, Sara;Rashidzadeh, Solmaz;Joshaghani, Mohammad;,期刊:Heterocycles, 页码:2225-2233 , 文章类型: 研究论文,,卷期:2008年75-9]
- Tungstophosphoric acid supported on titania H3PW12O40/TiO2, catalyzed three and four component coupling of various b-dicarbonyl compds., aldehydes and amines under solvent free conditions. Different 4-aryl, N-hydroxy Et ...
- Flavisiamines A - D, new indole alkaloids from Kopsia flavida.
[作者:Sekiguchi, Mitsuhiro;Hirasawa, Yusuke;Zaima, Kazumasa;Hoe, Teh Chin;Chan, Kit-Lam;Morita, Hiroshi;,期刊:Heterocycles, 页码:2283-2288 , 文章类型: 研究论文,,卷期:2008年75-9]
- Four new Me chanofruticosinate-type alkaloids, flavisiamines A (I) ~ D have been isolated from Kopsia flavida (Apocynaceae) and their structures were elucidated by NMR spectral anal. using 2D techniques.
- The regioselective synthesis of 2H-pyrido[2,3-b]pyrrolo[2,3-e]pyrazin-2-one.
[作者:Jamrozy, Krzysztof;Szymoniak, Katarzyna;Ostrowska, Katarzyna;,期刊:Heterocycles, 页码:2275-2282 , 文章类型: 研究论文,,卷期:2008年75-9]
- Compounds (More Than One Hetero Atom)) Section The regioselective reaction of 1-aryl-4-(phenylhydroxymethylidene)-pyrrolidine-2,3,5-triones, e.g., I, with 2,3-diaminopyridine in boiling glacial AcOH in the presence of Ts...
- Synthesis and characterization of 2,3,5,6-tetraphenylpyrazine-N,N-dioxide: new nitrone dimer species.
[作者:Essa, Ali Hashem;Al-Shamkhani, Zeki A. Nasir;Jalbout, Abraham F.;Hameed, Ali Jameel;,期刊:Heterocycles, 页码:2235-2242 , 文章类型: 研究论文,,卷期:2008年75-9]
- The synthesis, characterization, and phys. properties of 2,3,5,6-tetraphenylpyrazine N,N-dioxide are reported. A specific redn. mechanism of an oxime using Zn with NH4Cl to yield NH2OH was performed. This was followed ...
- Studies on enamines and azaenamines. 2-Oxoarylhydrazonals as C-1 nucleophiles.
[作者:Al-Mousawi, Saleh M.;Moustafa, Moustafa Sherief;Elnagdi, Mohamed Hilmy;,期刊:Heterocycles, 页码:2201-2211 , 文章类型: 研究论文,,卷期:2008年75-9]
- 2-Oxoarylhydrazonals react with aldehydes, piperidine, morpholine, and benzotriazole to yield the corresponding Mannich bases. Formaldehyde reacts with 2-oxoarylhydrazonals to yield the hydroxymethylarylhydrazones togeth...
- A new sulfa-heterocyclic compounds containing aziridine moiety, 3-benzyl-2-thia-1,3-diazabicyclo[3.1.0]hexane 2,2-dioxide and its reaction with nucleophiles.
[作者:Khettache, Nawel;Berredjem, Malika;Regainia, Zine;Aouf, Nour-Eddine;,期刊:Heterocycles, 页码:2243-2250 , 文章类型: 研究论文,,卷期:2008年75-9]
- A new sulfa-heterocycle contg. an aziridine moiety, 3-benzyl-2-thia-1,3-diazabicyclo[3.1.0]hexane 2,2-dioxide, was obtained starting from 2-benzyl-4-chloromethyl-1,2,5-thiadiazolidine 1,1-dioxide in alk. conditions. The...
- Synthesis of new 3-nitroimidazo[1,2-a]pyridine derivatives by SRN1 reactions.
[作者:Szabo, Remi;Crozet, Maxime D.;Vanelle, Patrice;,期刊:Heterocycles, 页码:2263-2274 , 文章类型: 研究论文,,卷期:2008年75-9]
- 6,8-Dibromo-2-chloromethyl-3-nitroimidazo[1,2-a]pyridine was reacted under conditions of SRN1 reactions with different C- and S-centered nucleophiles to det. the relative reactivities of the different types of electrophi...
- A clean synthesis of 3,3-bis(5-amino-1H-pyrazol-4-yl)indolin-2-one derivatives.
[作者:Ahadi, Somayeh;Shakibaei, Ghazaleh Imani;Mirzaei, Peiman;Bazgir, Ayoob;,期刊:Heterocycles, 页码:2293-2299 , 文章类型: 研究论文,,卷期:2008年75-9]
- A clean and efficient method was reported for the condensation of 1,3-diphenyl-1H-pyrazol-5-amine with isatins in aq. media to afford the corresponding 3,3-bis(5-amino-1H-pyrazol-4-yl)indolin-2-one derivs. in good yields...
- Facile entry to ethyl tetrahydro-1H-pyrrolizin-7a(5H)-ylacetate: a versatile pharmaceutical intermediate.
[作者:Bruno, Claudio;Catalano, Alessia;Lentini, Giovanni;Carocci, Alessia;Franchini, Carlo;Tortorella, Vincenzo;,期刊:Heterocycles, 页码:2193-2200 , 文章类型: 研究论文,,卷期:2008年75-9]
- An improved synthesis of tetrahydro-1H-pyrrolizin-7a(5H)-ylacetate is reported. This valuable pharmaceutical intermediate was easily obtained from 1,7-diiodo-4-heptanone in 46% yield, thus improving the procedure report...
|