Letters in Organic Chemistry

Editor-in-Chief:

Alberto Marra
University of Montpellier
Montpellier
France

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Open Access Articles

One New C21 Steroidal Glycosides from the Leaves of Cynanchum hancockianum open Access plus

Volume: 16   Issue: 7
Pp: 556-559
Shubei Yu, Xixi Lin, Yi Zheng, Zheng Wu, Wei Zheng and Liman Qiao*
DOI:10.2174/1570178615666181016113531

Synthesis of 1-(3-Phenylpropyl)-4-(pyridinylmethoxy)-[1,2,4]triazolo[4,3-a] quinoxalines open Access plus

Volume: 16   Issue: 1
Pp: 25-29
Dominik Summer and Barbara Matuszczak*
DOI:10.2174/1570178615666180713091531

An Efficient Oxidation of Alcohols by Aqueous H2O2 with 1,3-Dibromo- 5,5-Dimethylhydantoin open Access plus

Volume: 15   Issue: 10
Pp: 895-898
Jieun Lee and Jong Chan Lee*
DOI:10.2174/1570178615666180613080548

Synthesis of Secondary Phosphine Oxides by Substitution at Phosphorus by Grignard Reagents open Access plus

Volume: 15   Issue: 5
Pp: 387-393
Anna Tripolszky and Gyorgy Keglevich*
DOI:10.2174/1570178615666171227144555

Direct Oxidation of Aldehydes to Methyl Esters with Urea Hydrogen Peroxide and p-Toluenesulfonyl Chloride open Access plus

Volume: 14   Issue: 10
Pp: 725-728
Deuk Jun Jeong, Su Bin Lee and Jong Chan Lee*
DOI:10.2174/1570178614666170918121035

FledFold: A Novel Software for RNA Secondary Structure Prediction open Access plus

Volume: 14   Issue: 9
Pp: 714-716
Qi Zhao, Yuanning Liu, Yunna Duan, Tao Dai, Rui Xu, Hao Guo, Daiming Fan, Yongzhan Nie and Hao Zhang*
DOI:10.2174/1570178614666170419122621

A Short Route to the Ester (±) HomoSarkomycin via Johnson-Claisen Rearrangement open Access plus

Volume: 14   Issue: 3
Pp: 181-185
Mαhamed Saied, Rafik Gatri*, Abdullah Sulaiman Al-Ayed, Youssef Arfaoui and Mohamed Moncef El Gaied
DOI:10.2174/1570178614666161230123513

Synthesis of bis(indolyl)methanes Catalyzed by Triethylborane open Access plus

Volume: 12   Issue: 5
Pp: 332-336
J. Pablo Garcia Merinos, Heraclio Lopez Ruiz, Yliana Lopez and Susana Rojas
DOI:10.2174/1570178612666150220225335

The Rational Synthesis of Fenidronate open Access plus

Volume: 11   Issue: 5
Pp: 368-373
Alajos Grun, Rita Kovács, Dávid Illés Nagy, Sándor Garadnay, István Greiner and Gyorgy Keglevich
DOI:10.2174/1570178611666140124001516

Efficient Synthesis of 6-O-methyl-scutellarein from Scutellarin via Selective Methylation open Access plus

Volume: 10   Issue: 10
Pp: 733-737
Min-Zhe Shen, Zhi-Hao Shi, Nian-Guang Li, Hao -Tang, Qian-Ping Shi, Yu-Ping Tang, Jian-Ping Yang and Jin-Ao Duan
DOI:10.2174/15701786113109990046

1,2,4-Triazoles: A Review of Synthetic Approaches and the Biological Activity open Access plus

Volume: 10   Issue: 10
Pp: 693-714
Suresh Maddila, Ramakanth Pagadala and Sreekanth B. Jonnalagadda
DOI:10.2174/157017861010131126115448

Copper and Iron-assisted Palladium-catalyzed Direct Arylation of Azoles with Arylboronic Acids under Ligand and Base-free Conditions open Access plus

Volume: 10   Issue: 9
Pp: 668-673
Xiang-Mei Wu and Qiu-Xian Shen
DOI:10.2174/15701786113109990034

A Simple and Highly Efficient Procedure for One-Pot Synthesis of 2- Azetidinones Using 3,5-Dinitrobenzoyl Chloride open Access plus

Volume: 10   Issue: 9
Pp: 645-650
Alireza Darvishi, Maaroof Zarei and Mohammad Reza Akhgara
DOI:10.2174/15701786113109990037

A Novel Semisynthetic Anion Receptor: Synthesis and Ion Recognition of (1-H-pyrrol-2-yl)-4-oxo-perezone open Access plus

Volume: 10   Issue: 9
Pp: 632-636
Luis Chacón-García, Mario Valle-Sánchez and Claudia A. Contreras-Celedón
DOI:10.2174/15701786113109990035

Improvement of Alcohol Dehydrogenase and Horseradish Peroxidase Loadings in Ethanol Determination by a Bienzyme Sensor open Access plus

Volume: 10   Issue: 8
Pp: 611-616
Aurelia Magdalena Pisoschi
DOI:10.2174/15701786113109990023

Halogen Exchange via a Halogenation of Diaryliodonium Salts with Cuprous Halide open Access plus

Volume: 10   Issue: 8
Pp: 541-548
Jian Li, Li Liu, Dong Ding and Jiang-tao Sun
DOI:10.2174/15701786113109990011

The Pd(0) Nanoparticles Stabilized by Collagen Fibers as a Recyclable Heterogeneous Catalyst for the Cyanation of Aryl Bromides Using K4Fe(CN)6 as Non-toxic Source of Cyanide open Access plus

Volume: 10   Issue: 7
Pp: 523-526
Siavash Bahari
DOI:10.2174/1570178611310070011

New Green, Recyclable Magnetic Nanoparticles Supported Amino Acids as Simple Heterogeneous Catalysts for Knoevenagel Condensation open Access plus

Volume: 10   Issue: 7
Pp: 468-477
D. Girija, H.S. Bhojya Naik, B. Vinay Kumar, C.N. Sudhamani and K. N. Harish
DOI:10.2174/15701786113109990002

A Clean and Efficient Conversion of Aldehydes into the Corresponding Nitriles Using Ionic Supported Triphenylphosphine and CBr4 open Access plus

Volume: 10   Issue: 6
Pp: 442-444
Congde Huo, Cheng Wang, Dongcheng Hu and Xiaodong Jia
DOI:10.2174/15701786113109990009

The Syntheses, Molecular Structures, Spectroscopic Properties (IR, Micro– Raman, NMR and UV–vis) and DFT Calculations of Antioxidant 3– alkyl–4–[3–methoxy–4–(4–methylbenzoxy)benzylidenamino]–4,5–dihydro– 1H–1,2,4–triazol–5–one Molecules open Access plus

Volume: 10   Issue: 6
Pp: 395-441
Halil Gokce, Semiha Bahceli, Onur Akyildirim, Haydar Yuksek and Ozlem Gursoy Kol
DOI:10.2174/15701786113109990001

Microwave-Assisted Solid-Liquid Phase Alkylation of Naphthols open Access plus

Volume: 10   Issue: 5
Pp: 330-336
Erika Balint, Orsolya Kovacs, Laszlo Drahos and Gyorgy Keglevich
DOI:10.2174/1570178611310050005

Simple Stereoselective Synthesis of Unsaturated Lactone Intermediates and Their Conversion into Natural Dihydropyranones and Their Enantiomers# open Access plus

Volume: 10   Issue: 5
Pp: 317-323
Digambar Balaji Shinde, Boddu Shashi Kanth, Avula Satyakumar, V.T. Kamble and Biswanath Das
DOI:10.2174/1570178611310050003

Comparison of Novel Tacrine and 7-MEOTA Derivatives with Aromatic and Alicyclic Residues: Synthesis, Biological Evaluation and Docking Studies open Access plus

Volume: 10   Issue: 4
Pp: 291-297
Jan Korabecny, Ladislav Janovec, Kamil Musilek, Filip Zemek, Anna Horova, Eugenie Nepovimova, Rafael Dolezal, Veronika Opletalova, Jana Hroudova, Zdenek Fisar, Young-Sik Jung and Kamil Kuca
DOI:10.2174/1570178611310040011

A New Proposal for the Estimation of the Aromatic Character open Access plus

Volume: 10   Issue: 4
Pp: 277-282
Maurizio D`Auria
DOI:10.2174/1570178611310040009

Efficient Synthesis of Aromatic Nitriles via Cyanation of Aryl Bromides and K4[Fe(CN)6] Catalyzed by a Palladium(II) Complex open Access plus

Volume: 10   Issue: 3
Pp: 213-215
Mengping Guo, Junying Ge, Zhiyong Zhu and Xiaochun Wu
DOI:10.2174/1570178611310030013

A Very Simple, Highly Efficient and Catalyst-free Procedure for the NFormylation of Amines Using Triethyl orthoformate in Water Under Ultrasound-irradiation open Access plus

Volume: 10   Issue: 3
Pp: 209-212
Davood Habibi, Hesam Sahebekhtiari, Mahmoud Nasrollahzadeh and Ahmad Taghipour
DOI:10.2174/1570178611310030012

Rapid and Efficient Synthesis of N-alkylbenzamides Under Microwave Irradiation open Access plus

Volume: 10   Issue: 2
Pp: 126-130
Jan K. Cermak, Karel Kolar and Vladimir Cirkva
DOI:10.2174/1570178611310020011

A Mild and Green Method for the N-BOC Protection of Amines without Assistant of Catalyst Under Solvent-free Conditions open Access plus

Volume: 10   Issue: 2
Pp: 121-125
Mohammad Majid Mojtahedi, Nina Niknejad and Hojat Veisi
DOI:10.2174/1570178611310020010

A Practical Synthesis and X-ray Crystallographic Analysis of Dithymoquinone, a Photodimer of Thymoquinone open Access plus

Volume: 9   Issue: 10
Pp: 762-766
Alan L. Myers, Yan-Ping Zhang, Mark A. Kramer, William G. Bornmann, Ahmed Kaseb, Peiying Yang and Hai T. Tran
DOI:10.2174/157017812803901890

Syntheses of Fused Thiophenes: [7]Helicene and Double Helicene Bearing Chiral Alkyl Chains open Access plus

Volume: 9   Issue: 10
Pp: 706-710
Juanjuan Yang, Chunli Li, Zhihua Wang and Hua Wang
DOI:10.2174/157017812803901926

Enantioselective Addition of Diethylzinc to Aldehydes by Chiral Oxazolidine–Titanium Complex open Access plus

Volume: 9   Issue: 9
Pp: 644-649
Nan Wu, Rongcheng Bo, Rongli Zhang, Xi Jiang, Yu Wan, Zhou Xu and Hui Wu
DOI:10.2174/157017812803521180

Practical and Scalable Synthesis of (Z)-9-Tricosene, the Housefly Sex Pheromone open Access plus

Volume: 9   Issue: 9
Pp: 628-631
Miri Kim, Arigala Pitchaiah, No-Joong Park, In Taek Hwang and Kee-In Lee
DOI:10.2174/157017812803521199

The Synthesis of Allosamidin and Its Analogue Di-N-Acetyl-β-Chitobiosyl NAG-Thiazoline Using the Photosensitive o-Nitrobenzyl Ether Tether as Linker open Access plus

Volume: 9   Issue: 8
Pp: 577-579
Gangliang Huang and Fei Cheng
DOI:10.2174/157017812802850267

Synthesis of 1,3,6-Trioxygenated Prenylated Xanthone Derivatives as Potential Antitumor Agents open Access plus

Volume: 9   Issue: 8
Pp: 549-555
Chan K. Lim, Lai-Yeng Tho, Yang M. Lim, Syed A. A. Shah and Jean-Frederic F. Weber
DOI:10.2174/157017812802850230

Revisit: Eaton’s Reagent Catalyzed Synthesis of Mono and Bis-Chalcone Derivatives open Access plus

Volume: 9   Issue: 7
Pp: 526-529
Shrikrishna. D. Tupare, Santosh V. Nalage, Sharad R. Bobe, Shivshankar N. Hallale, Sheshanath V. Bhosale, Sanjay K. Vyawahare, Satish A. Dake, Sidhanath V. Bhosale and Rajendra P. Pawar
DOI:10.2174/157017812802139627

Zinc Hydrogen Sulfate Promoted Multi-component Preparation of Highly Functionalized Piperidines open Access plus

Volume: 9   Issue: 7
Pp: 497-502
Majid Ghashang
DOI:10.2174/157017812802139564

An Efficient Green MCR Protocol for the Synthesis of New Betti Bases via Mannich-Type Reaction open Access plus

Volume: 9   Issue: 6
Pp: 451-456
Abolfazl Olyaei, Mojgan Zarnegar, Mahdieh Sadeghpour and Mortaza Rezaei
DOI:10.2174/157017812801322499

Highly Efficient One Step Synthesis of Primary Amines from B-Chlorodialkylboranes open Access plus

Volume: 9   Issue: 6
Pp: 383-385
Sanjay V. Malhotra and Herbert C. Brown
DOI:10.2174/157017812801322453

Unusual Course of the Reaction of Lawesson’s Reagent with β-Phosphoryl- β’-carbethoxyhydrazones: First Synthesis of 5-Mercapto-3-(methylthiophosphoryl) pyrazoles open Access plus

Volume: 9   Issue: 5
Pp: 320-324
Emna Chebil and Soufiane Touil
DOI:10.2174/157017812801264764

New 2-Phenylquinoline Derivatives: Synthesis and Preliminary Evaluation as Antimicrobial Agents open Access plus

Volume: 9   Issue: 5
Pp: 309-313
Saida Benzerka, Abdelmalek Bouraiou, Sofiane Bouacida, Thierry Roisnel, Chafia Bentchouala, Farida Smati and Ali Belfaitah
DOI:10.2174/157017812801264647

A Novel Practical Synthesis of Pazopanib: An Anticancer Drug open Access plus

Volume: 9   Issue: 4
Pp: 276-279
YiCheng Mei, BaoWei Yang, Wei Chen, DanDan Huang, Ying Li, Xin Deng, BaoMing Liu, JingJie Wang, Hai Qian and WenLong Huang
DOI:10.2174/157017812800233714

Novel Peptide Mimetics Based on N-protected Amino Acids Derived from Isomannide as Potential Inhibitors of NS3 Serine Protease of Hepatitis C Virus open Access plus

Volume: 9   Issue: 4
Pp: 239-249
Thalita G. Barros, Bruna C. Zorzanelli, Sergio Pinheiro, Monique A. de Brito, Amilcar Tanuri, Emmerson C.B. da Costa, Ronaldo S. Mohana-Borges, Carlos R. Rodrigues, Alessandra T.M. Souza, Vitor F. Ferreira and Estela M.F. Muri
DOI:10.2174/157017812800233787

Radical Cation Salts Induced aza-Diels-Alder Reaction: Synthesis of Hexahydrofuro[3,2-c]- quinoline Derivatives open Access plus

Volume: 9   Issue: 3
Pp: 221-224
Zhong Jia, Yan Ren, Cong-De Huo, Xiang-Ning Chen, Chong-Xiang Tong and Xiao-Dong Jia
DOI:10.2174/157017812800167484

Magnetic Nanoparticles Catalyzed N-Tert-Butoxycarbonylation of Amines and Amine Derivatives open Access plus

Volume: 9   Issue: 3
Pp: 165-168
Jafar Akbari, Soghra B. Sajirani, Jafar M. Nezhad and Akbar Heydari
DOI:10.2174/157017812800167510

Study of the Regio- and Stereoselectivity of [3+2] Cycloaddition of Nitrile Oxides to Various Racemic 3-acyloxy and 3-hydroxybut-1-enes open Access plus

Volume: 9   Issue: 2
Pp: 96-100
Heithem Abda, Kaiss Aouadi, David Gueyrard, Jean-Pierre Praly and Moncef Msaddek
DOI:10.2174/157017812800221681

Triphenylphosphine Catalyzed, One-Pot, Multicomponent Synthesis of Spirooxindoles open Access plus

Volume: 9   Issue: 2
Pp: 101-105
Syed Riyaz, A. Naidu and Pramod K. Dubey
DOI:10.2174/157017812800221771

Platinum Complexes of Five- and Six-Membered P-Heterocycles as Potential Catalysts open Access plus

Volume: 7   Issue: 8
Pp: 612-620
Gyorgy Keglevich and Laszlo Kollar
DOI:10.2174/157017810793811713

Preparation of Disubstituted Phenyl Propargyl Alcohols, their Use in Oxathiolene Oxide Synthesis, and Evaluation of the Oxathiolene Oxide Products as Anticarcinogenic Enzyme Inducers open Access plus

Volume: 6   Issue: 3
Pp: 242-251
Maben Ying, Matthew G. Smentek, Rong Ma, Cynthia S. Day, Suzy V. Torti and Mark E. Welker
DOI:10.2174/157017809787893064

Eco-Friendly Accomplishment of the Extended Kabachnik – Fields Reaction; a Solvent- and Catalyst-Free Microwave-Assisted Synthesis of α- Aminophosphonates and α-Aminophosphine Oxides open Access plus

Volume: 5   Issue: 8
Pp: 616-622
Gyorgy Keglevich and Anna Szekrenyi
DOI:10.2174/157017808786857598