- Synthesis and Properties of New Isoalloxazine (= Benzo[g]pteridine-2,4(1H,3H)dione) Derivatives as Labels for Oligonucleotides
[作者:Kvassiouk, E; Charubala, R; Pfleiderer, W,期刊:Helvetica Chimica Acta, 页码:1038-1047 , 文章类型: Article,,卷期:2010年93-6]
- A series of new fluorescing 8-(6-hydroxyhexyl)isoalloxazine (=8-(6-hydroxyhexyl)benzo[g]pteridine-2,4(1H,3H)-dione) derivatives 4-13 were synthesized from 64(6-hydroxyhexyl)aminofuracil (2) with 1-chloro-4-nitrosobenzene...
- A Convenient Synthesis of 2,3-Dihydro-3-methylidene-1H-isoindol-1-ones by Reaction of 2-Formylbenzonitriles with Dimethyloxosulfonium Methylide
[作者:Kobayashi, K; Matsumoto, K; Nakamura, D; Fukamachi, S; Konishi, H,期刊:Helvetica Chimica Acta, 页码:1048-1051 , 文章类型: Article,,卷期:2010年93-6]
- A facile method for the synthesis of 2,3-dihydro-3-methylidene-1H-isoindol-1-one and its derivatives carrying substituent(s) at C(5) and/or C(6) has been developed. The reaction of 2-formylbenzonitrile (la) with dimethyl...
- Photocycloaddition of Conjugated Cyclohex-2-enones to 2,3-Dimethylbuta-1,3-diene
[作者:Inhulsen, I; Schmidt, K; Margaretha, P,期刊:Helvetica Chimica Acta, 页码:1052-1057 , 文章类型: Article,,卷期:2010年93-6]
- On irradiation, in the presence of 2,3-dimethylbuta-1,3-diene, naphthalen-2-ones 1 are quantitatively and regioselectively converted to mixtures of diastereoisomeric cyclobutane adducts 3 and 4, whereas, under these cond...
- Oleanane Saponins and Glycerogalactolipids from the Leaves of Guapira graciliflora
[作者:Severi, JA; Fertig, O; Plitzko, I; Vilegas, W; Hamburger, M; Potterat, O,期刊:Helvetica Chimica Acta, 页码:1058-1066 , 文章类型: Article,,卷期:2010年93-6]
- Two new saponins, 3-O-[beta-xylopyranosyl-(1 --> 3)-beta-D-galactopyranosyl-(1 --> 3)-beta-glucuronopyranosyl]oleanolic acid 28-O-beta-D-glucopyranosyl ester (1) and the corresponding monodesmoside, 3-O-[beta-xylopyranos...
- Oxidative Degradation of 2,4-Dihydroxybenzoic Acid by the Fenton and Photo-Fenton Processes: Kinetics, Mechanisms, and Evidence for the Substitution of H2O2 by O-2
[作者:Haddou, M; Benoit-Marquie, F; Maurette, MT; Oliveros, E,期刊:Helvetica Chimica Acta, 页码:1067-1080 , 文章类型: Article,,卷期:2010年93-6]
- The kinetics and mechanisms of the oxidative degradation of 2,4-dihydroxybenzoic acid (2,4-DHBA) by the Fenton and photo-Fenton processes were investigated in detail by a combination of H PLC, IC, and TOC analyses. The f...
- Two New Steroidal Saponins from the Processed Polygonatum kingianum
[作者:Yu, HS; Ma, BP; Song, XB; Kang, LP; Zhang, T; Fu, J; Zhao, Y; Xiong, CQ; Tan, DW; Zhang, LJ; Zhang, J; Yu, KT,期刊:Helvetica Chimica Acta, 页码:1086-1092 , 文章类型: Article,,卷期:2010年93-6]
- Two new spirostanol saponins, kingianoside I (1) and kingianoside K (2), corresponding to (3 beta,23S,25R)-23-hydroxy-12-oxospirost-5-en-3-yl 4-O-beta-D-glucopyranosyl-beta-D-galactopyranoside (1) and (3 beta,25R)-7-oxos...
- Reaction of Hydantoin with Boronic Acids
[作者:Gwynne, EA; Holt, JC; Dwan, JR; Appoh, FE; Vogels, CM; Decken, A; Westcott, SA,期刊:Helvetica Chimica Acta, 页码:1093-1100 , 文章类型: Article,,卷期:2010年93-6]
- We have examined the reaction of hydantoin (= imidazolidine-2,4-dione) with (formylphenyl)boronic acids, where the addition of a boronic acid group is hoped to increase bioactivities. Addition of (2-formylphenyl)boronic ...
- Marrusidins A and B, New Epimeric Labdane Diterpenes from Marrubium anisodon
[作者:Hussain, A; Perveen, S; Malik, A; Khan, AN; Tareen, RB,期刊:Helvetica Chimica Acta, 页码:1101-1104 , 文章类型: Article,,卷期:2010年93-6]
- Marrusidins A (1) and B (2), two new labdane-type diterpenes, were isolated from the CHCl3-soluble subfraction of Marrubium anisodon, along with polyodonine. Their structures were assigned with the aid of H-1- and C-13-N...
- Synthesis of New Phosphonium Ylides Containing Thiophene and Furan Rings and Study of Their Reaction with Mercury(II) Halides: Spectral and Structural Characterization
[作者:Sabounchei, SJ; Jodaian, V; Salehzadeh, S; Samiee, S; Dadrass, A; Bayat, M; Khavasi, HR,期刊:Helvetica Chimica Acta, 页码:1105-1119 , 文章类型: Article,,卷期:2010年93-6]
- Reactions of phosphonium ylides (4-MeC6H4)(3)PCHC(=O)(2-C4H3S) (tptpy), Ph3PCHC(=O)(2-C4H3O) (fppy), and (4-MeC6H4)(3)PCHC(=O)(4-BrC6H4) (bbtppy) with HgX2 (X = Cl, Br, and I) in equimolar ratios in MeOH as solvent leads...
- Total Synthesis of the Biologically Active, Naturally Occurring 3,4-Dibromo-5-[2-bromo-3,4-dihydroxy-6-(methoxymethyl)benzyl]benzene-1,2-diol and Regioselective O-Demethylation of Aryl Methyl Ethers
[作者:Akbaba, Y; Balaydin, HT; Goksu, S; Sahin, E; Menzek, A,期刊:Helvetica Chimica Acta, 页码:1127-1135 , 文章类型: Article,,卷期:2010年93-6]
- 3,4-Dibromo-5-[2-bromo-3,4-dihydroxy-6-(methoxymethyl)benzyl]benzene-1,2-diol (2), a natural product, has been synthesized for the first time starting from (3-bromo-4,5-dimethoxyphenyl)methanol (5) in five steps and with...
- Synthesis of Novel Bis(beta-cyclodextrin)s Linked with Glycol and Their Inclusion Complexation with Organic Dyes
[作者:Zhao, Y; Yang, YC; Shi, H; Zhu, HY; Huang, R; Chi, CM; Zhao, Y,期刊:Helvetica Chimica Acta, 页码:1136-1148 , 文章类型: Article,,卷期:2010年93-6]
- Three novel bis(beta-cyclodextrin (CD))s with flexible glycol linkers, i.e., ethylene glycol-bridged bis(6-hydroxy-6-deoxy-beta-CD) (2), diethylene glycol-bridged bis(6-hydroxy-6-deoxy-beta-CD) (3), and triethylene glyco...
- Towards Carotenoid Dendrimers: Carotenoid Diesters and Triesters with Aromatic Cores
[作者:Hada, M; Nagy, V; Gulyas-Fekete, G; Deli, J; Agocs, A,期刊:Helvetica Chimica Acta, 页码:1149-1155 , 文章类型: Article,,卷期:2010年93-6]
- For the evaluation of the synthesis of dendritic esters from carotenoids, various carotenols or their succinates were reacted with bi- and trifunctional aromatic acids and alcohols. Several methods were tested, from whic...
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