- Regioselective Synthesis of the 5,6-Dihydro-4H-furo[2,3-c]pyrrol-4-one Skeleton: A New Class of Compounds
[作者：Koza, G; Karahan, E; Balci, M,期刊：Helvetica Chimica Acta, 页码：1698-1704 , 文章类型： Article，,卷期：2010年93-9]
- We hereby report the first preparation of the 5,6-dihydro-4H-furo[2.3-c]pyrrol-4-one (3) and its derivatives starting from methyl 3-(methoxycarbonyl)furnan-2-acetate (8). The ester functionality connected to the methylen...
- Cyclization vs. Elimination Reactions of 5-Aryl-5-hydroxy 1,3-Diones: One-Pot Synthesis of 2-Aryl-2,3-dihydro-4H-pyran-4-ones
[作者：Khera, RA; Ahmad, R; Ullah, I; Abid, OUR; Fatunsin, O; Sher, M; Villinger, A; Langer, P,期刊：Helvetica Chimica Acta, 页码：1705-1715 , 文章类型： Article，,卷期：2010年93-9]
- 2-Aryl-2,3-dihydro-4H-pyran-4-ones were prepared in one step by cyclocondensation of 1,3-diketone dianions with aldehydes. The use of HCl (10%) for the aqueous workup proved to be very important to avoid elimination reac...
- Synthesis of Three-, Five-, and Six-Membered Heterocycles Derived from New beta-Amino-alpha-(trifluoromethyl) Alcohols
[作者：Obijalska, E; Mloston, G; Linden, A; Heimgartner, H,期刊：Helvetica Chimica Acta, 页码：1725-1736 , 文章类型： Article，,卷期：2010年93-9]
- Nucleophilic trifluoromethylation of alpha-imino ketones 2, derived from arylglyoxal. with Ruppert-Prakash reagent (CF3SiMe3) offers a convenient access to the corresponding O-silylated beta-imino-alpha-(trifluoromethyl)...
- Two New Sesquiterpenes from the Fungus Stereum sp.
[作者：Liu, FF; Li, GH; Yang, ZS; Zheng, X; Yang, Y; Zhang, KQ,期刊：Helvetica Chimica Acta, 页码：1737-1741 , 文章类型： Article，,卷期：2010年93-9]
- Two new sesquiterpenes, stereumin F (1) and stereumin G (2), together with two known compounds (3 beta,5 alpha,22E,24R)-5,8-epidioxyergosta-6,22-dien-3-ol (3) and 4-(2-hydroxyethyl)phenol (4), were isolated from the AcOE...
- Cytotoxic Evaluation of Pungencine: A New Tropane Alkaloid from the Roots of Erythroxylum pungens O. E. SCHULZ
[作者：Sena, JG; da Silva, MS; Tavares, JF; Oliveira, SL; Romero, MAV; Xavier, HS; Barbosa, JM; Braz, R,期刊：Helvetica Chimica Acta, 页码：1742-1744 , 文章类型： Article，,卷期：2010年93-9]
- A new tropane alkaloid as well as a new substitution group, (3-endo,8-anti)-8-methyl-8-azabicyclo[3.2.1]oct-3-yl 4-hydroxy-3,5-dimethoxybenzoate, called pungencine (1), was isolated from the roots of Erythroxylum pungens...
- An Improved Preparation of D-Glyceraldehyde 3-Phosphate and Its Use in the Synthesis of 1-Deoxy-D-xylulose 5-Phosphate
[作者：Li, H; Tian, J; Wang, H; Yang, SQ; Gao, WY,期刊：Helvetica Chimica Acta, 页码：1745-1750 , 文章类型： Article，,卷期：2010年93-9]
- D-Glyceraldehyde 3-phosphate (=D-GAP: 2) was prepared by all improved chemical method (Scheme 2), and it was then employed to synthesize 1-deoxy-D-xylulose 5-phosphate (-DXP: 3) which is enzymatically one of the key inte...
- Three New Indole-Containing Diketopiperazine Alkaloids from a Deep-Ocean Sediment Derived Fungus Penicillium griseofulvum
[作者：Zhou, LN; Zhu, TJ; Cai, SX; Gu, QQ; Li, DH,期刊：Helvetica Chimica Acta, 页码：1758-1763 , 文章类型： Article，,卷期：2010年93-9]
- Three new indole-containing diketopiperazine alkaloids, named variecolorins M-O (1-3) together with the eight known analogues 4-11, were isolated from a deep-ocean sediment-derived fungus. Penicillium griseofulvum. Their...
- Double Heck Cross-Coupling Reactions of Dibrominated Pyridines
[作者：Ali, A; Hussain, M; Malik, I; Villinger, A; Fischer, C; Langer, P,期刊：Helvetica Chimica Acta, 页码：1764-1772 , 文章类型： Article，,卷期：2010年93-9]
- Double Heck cross-coupling reactions of 2,3- and 3,5-dibromopyridine with various alkenes afforded the corresponding novel di(alkenyl)pyridines. The Heck reaction of 2,5-dibromopyridine unexpectedly afforded 5,5'-di(alke...
- Interconvertible Eudesmanolides Containing a 6,12-Hemiketal Function from Salvia castanea DIELS f. tomentosa STIB
[作者：Xu, G; Peng, LY; Shen, XL; Zhao, QS,期刊：Helvetica Chimica Acta, 页码：1773-1778 , 文章类型： Article，,卷期：2010年93-9]
- Two new eudesmanolide sesquiterpenoids containing a hemiacetal function, castanins G and H (1 and 2), were obtained as a pair of interconvertible isomers from the aerial parts of Salvia castanea DIELS f. tomentosa STIB. ...
- Three New Triterpene Saponins from Gynostemma pentaphyllum
[作者：Shi, L; Cao, JQ; Li, W; Zhao, YQ,期刊：Helvetica Chimica Acta, 页码：1785-1794 , 文章类型： Article，,卷期：2010年93-9]
- Three new dammarane-type triterpene saponins, 1-3, together with three known compounds, 4-6, were isolated from the aerial parts of Gynostemma pentaphyllum (THUNB) MAKINO. By means of chemical and spectroscopic methods, ...
- Anthraquinones and Lignans from Cassia occidentalis
[作者：Li, SF; Di, YT; Wang, YH; Tan, CJ; Fang, X; Zhang, Y; Zheng, YT; Li, L; He, HP; Li, SL; Hao, XJ,期刊：Helvetica Chimica Acta, 页码：1795-1802 , 文章类型： Article，,卷期：2010年93-9]
- One new anthraquinone glycoside. 6-O-(alpha-L-rhamnopyranosyl (1 -> 6)-beta-D-glucopyranosyl)emodin (1). and two new sesquilignans. seslignanoccidentaliols A (2) and B (3), were isolated from the whole plant of Cassia oc...
- Study on the Constituents of Roots of Aceriphyllum rossii
[作者：Van, LTK; Hung, TM; Kim, SH; Kim, JC; Na, MK; Jung, HJ; Kwack, SJ; Kweon, KT; Choi, JS; Lee, HK; Bae, K; Min, BS,期刊：Helvetica Chimica Acta, 页码：1803-1807 , 文章类型： Article，,卷期：2010年93-9]
- A new stereoisomer of a tetrahydrofuranoid lignan.acerifuranoid A (1), and two new oleanane-type triterpenoids, aceriphyllic acids J and K (2 and 3), were isolated from the roots of Aceriphyllum rossii. Their structures ...
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