- Synthesis of 4,6-Dimethyldibenzothiophene and 1,2,3,4-Tetrahydro-4,6-dimethyldibenzothiophene via Tilak Annulation
[作者：Xu, XY; Li, X; Wang, AJ; Sun, YY; Schweizer, WB; Prins, R,期刊：Helvetica Chimica Acta, 页码：1754-1763 , 文章类型： Article，,卷期：2011年94-10]
- 1,2,3,4-Tetrahydro-4,6-dimethyldibenzothiophene was prepared by coupling 2-bromo-3-methylcyclohexanone with 2-methylbenzenethiol and annulating the product with the aid of polyphosphoric acid. A mixture of 1,2,3,4-tetrah...
- Triterpenoids from the Stems of Schisandra glaucescens
[作者：Meng, FY; Sun, JX; Li, X; Pi, HF; Zhang, P; Ruan, HL,期刊：Helvetica Chimica Acta, 页码：1778-1785 , 文章类型： Article，,卷期：2011年94-10]
- Two new lanostane triterpenoids, schiglauzic acid (1) and schiglaucyclozic acid (2), together with two known ones, anwuweizic acid (3) and manwuweizic acid (4), were isolated from the stems of Schisandra glaucescens. The...
- A New Germanium Complex Containing Chelating Pyridinecarboxylate Ligands: cis-Dihydroxybis(pyridine-2-carboxylato-kappa N(1),kappa O(2))germanium Hydrate (1:2) (cis-[Ge(pyca)(2)(OH)(2)]center dot 2H(2)O)
[作者：Shestopalov, MA; Efremova, OA; Smolentsev, AI; Mironov, YV; Fedorov, VE; Song, YW,期刊：Helvetica Chimica Acta, 页码：1786-1791 , 文章类型： Article，,卷期：2011年94-10]
- A new germanium complex, cis-[Ge(pyca)(2)(OH)(2)]center dot 2H(2)O (1; pyca = pyridine-2-carboxylato), was synthesized by the reaction of [Ge(acac)(2)Cl(2)] (acac = acetylacetonato = pentane-2,4-dionato) with potassium p...
- Tandem Palladium/Charcoal-Copper(I) Iodide (Pd/C-CuI) Catalyzed Sonogashira Coupling and Intramolecular Cyclization from 2-Bromonicotinic Acid (=2-Bromopyridine-3-carboxylic Acid) and Ethynylarenes to 4-Azaphthalides (=Furo[3,4-b]pyridin-5(7H)-ones) and 5-Azaisocoumarins (=5H-Pyrano[4,3-b]pyridin-5-ones)
[作者：Begouin, A; Queiroz, MJRP,期刊：Helvetica Chimica Acta, 页码：1792-1801 , 文章类型： Article，,卷期：2011年94-10]
- Several 4-azaphthalides (=furo[3,4-b]pyridin-5(7H)-ones) and 5-azaisocoumarins (=5H-pyrano[4,3-b]pyridin-5-ones) were prepared through a tandem heterogeneous Pd/C-mediated Sonogashira coupling and a 5-exo-dig or 6-endo-d...
- Rapid and Facile Access to Indeno[1,2-d]imidazoles via a Tandem Addition-Cyclization Reaction
[作者：Alizadeh, A; Zarei, A; Rezvanian, A,期刊：Helvetica Chimica Acta, 页码：1802-1805 , 文章类型： Article，,卷期：2011年94-10]
- A novel and tandem synthesis of highly functionalized tetrahydroindeno[1,2-d]imidazole is described. A one-pot reaction between a primary amine, an aryl isothiocyanate, and ninhydrin leads to highly substituted indeno[1,...
- Bisresorcinol Derivatives from Grevillea glauca
[作者：Wang, H; Leach, DN; Thomas, MC; Blanksby, SJ; Forster, PI; Waterman, PG,期刊：Helvetica Chimica Acta, 页码：1812-1819 , 文章类型： Article，,卷期：2011年94-10]
- Seven new and three known bisresorcinols, grevirobstol A(=5,5'-((6Z,9Z)-hexadeca-6,9-diene-1,16-diyl)bisresorcinol; 8), 5,5'-[(8Z)-hexadec-8-ene-1,16-diyl]bisresorcinol (9), and 2-methyl-5,5'-[8Z)-hexadec-8-ene-1,16-diyl...
- Two ent-Kaurane Diterpenoids from Rubus corchorifolius L. f.
[作者：Zhang, M; Ou, YW; Chen, XX; Cao, Y; Kuang, Y; Gong, ZQ; Peng, S; Chen, YJ,期刊：Helvetica Chimica Acta, 页码：1820-1824 , 文章类型： Article，,卷期：2011年94-10]
- A further chemical investigation of the plant Rubus corchorifolius L. f., collected in Hunan Province, afforded two new ent-kauranoids 6 and 7. Their structures were elucidated by various spectroscopic methods.
- Reaction of Primary Alkylamines, Heterocumulenes, and Isatoic Anhydride, Catalyzed by Magnetic Fe(3)O(4) Nanoparticles in H(2)O
[作者：Yavari, I; Beheshti, S,期刊：Helvetica Chimica Acta, 页码：1825-1830 , 文章类型： Article，,卷期：2011年94-10]
- An efficient protocol for the one-pot reaction of isatoic anhydride (=1,2-dihydro-4H-3,1-benzoxazine-2,4-dione), primary alkylamines, and heterocumulenes (isothiocyanates and isocyanates) in H(2)O catalyzed by magnetical...
- Preparation of Silica Nanoparticles from Organic Laboratory Waste of Silica Gel HF(254) and Their Use as a Highly Efficient Catalyst for the One-Pot Synthesis of 2,3-Dihydro-1H-isoindolone Derivatives
[作者：Ramazani, A; Mahyari, A; Farshadi, A; Rouhani, M,期刊：Helvetica Chimica Acta, 页码：1831-1837 , 文章类型： Article，,卷期：2011年94-10]
- Reaction of an isocyanide with an iminium ion intermediate, formed by reaction between 6-formyl-2,3-dimethoxybenzoic acid and secondary amines (dibenzyl-or benzyl(isopropyl) amine) in the presence of silica nanoparticles...
- Streptomycindole, an Indole Alkaloid from a Marine Streptomyces sp DA22 Associated with South China Sea Sponge Craniella australiensis
[作者：Huang, XL; Gao, Y; Xue, DQ; Liu, HL; Peng, CS; Zhang, FL; Li, ZY; Gu, YW,期刊：Helvetica Chimica Acta, 页码：1838-1842 , 文章类型： Article，,卷期：2011年94-10]
- A new indole alkaloid, streptomycindole (1), and a known related compound, N-phenylacetyl-L-tryptophan (2), have been isolated from Streptomyces sp. DA22, associated with South China Sea sponge Craniella australiensis. T...
- A New Anthraquinone and Two New Tetrahydroanthraquinones from the Roots of Prismatomeris connata
[作者：Feng, SX; Hao, J; Chen, T; Qiu, SX,期刊：Helvetica Chimica Acta, 页码：1843-1849 , 文章类型： Article，,卷期：2011年94-10]
- A new anthraquinone, 4-hydroxy-1,2,3-trimethoxy-6-methylanthracene-9,10-dione (1), and two novel tetrahydroanthraquinones, prisconnatanones A and B (2 and 3, resp.), together with 15 known anthraquinones, 4-18, were isol...
- New Triterpenoid and Ergostane Glycosides from the Leaves of Hydrocotyle umbellata L.
[作者：Sosa, A; Rosquete, C; Rojas, L; Pouysegu, L; Quideau, S; Paululat, T; Mitaine-Offer, AC; Lacaille-Dubois, MA,期刊：Helvetica Chimica Acta, 页码：1850-1859 , 文章类型： Article，,卷期：2011年94-10]
- Two new triterpenoid glycosides, together with two new ergostane glycosides, umbellatosides A-D (1-4, resp.), have been isolated from the leaves of Hydrocotyle umbellata L. Their structures were established by 2D-NMR spe...
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