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Limonoids from Citrus reticulata Ashraf T. Khalila*, Galal T. Maatooqa, and Khalid A. El Sayeda,b a Department of Pharmacognosy, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt. E-mail: ashrafÐ b Current address: Department of Basic Pharmaceutical Sciences, College of Pharmacy, University of Louisiana at Monroe, Monroe, Louisiana 71209, USA * Author for correspondence and reprint requests Z. Naturforsch. 58c, 165Ð170 (2003); received August 5/November 18, 2002 The seeds of Citrus reticulata afforded the new limonoid derivative

Limonoids from Cipadessa fruticosa Ana C. Leite, João B. Fernandes, M. Fátima das G. F. da Silva, and Paulo C. Vieira Department of Chemistry, Federal University of São Carlos, São Paulo, Brazil, CP 676 Reprint requests to Prof. Dr. João Batista Fernandes. Fax : +55-16-3351-8350. E-mail: Z. Naturforsch. 60b, 351 – 355 (2005); received July 16, 2004 The fruits of Cipadessa fruticosa Bl. afforded two new limonoids: methyl 8α,30α-epoxide-3β - (2’-methylbutyryloxy)-1-oxomeliacate (cipadesin A) and methyl 21,23-dihydro-23-hydroxy-21-oxo- 3β

Limonoids from the Endemic Brazilian Species Raulinoa echinata Maique W. Biavatti3 *, Paulo C. Vieira3 *, M. Fatima G. F. da Silva3, Joäo B. Fernandes3 and Sergio Albuquerque15 a Departamento de Qufmica, Universidade Federal de Säo Carlos, CP 676, 13565-905, Säo Carlos, SP. Brazil. *Fax: +55 16 260 8350. E-mail: b Faculdade de Ciencias Farmaceuticas. Universidade de Säo Paulo, Av. do Cafe, 14040-903, Ribeiräo Preto, Säo Paulo. Brazil * Permanent address: UNIVALI, Curso de Farmäcia, CP 360, 88303-202, Itajai, SC, Brazil * Author for

, low persistence in the environment, biodegradability, and no develop- ment of resistance by insect pest (Céspedes et al., 2000). After the isolation of azadirachtin, an effective insect antifeedant against the desert lo- cust (Butterworth and Morgan, 1971), from neem seeds, several limonoids from the order Rutales have been screened for their insect antifeedant activity. Limonoids are modifi ed triterpenes. They present a wide range of biological activities, in- cluding insect-antifeeding and growth-regulating properties, a variety of medicinal effects on

Limonoids as Larvicidal Components against Mosquito Larvae (Aedes aegypti Linn.) Ambrose Kipchumba Kipropa,*, Paul Chepkwony Kipronoa, Mohammed Said Rajabb, and Mathew Kipchumba Kosgeic a Department of Chemistry, Moi University, P. O. Box 1125, Eldoret, Kenya. Fax: +254-5320-63257. E-mail: b Kenyatta University, P. O. Box 43844, Nairobi, Kenya c Department of Maths-Biostatistics, Moi University, P. O. Box 1125, Eldoret, Kenya * Author for correspondence and reprint requests Z. Naturforsch. 62c, 826Ð828 (2007); received September 21/December

Isolation and Characterization of Limonoids from Kigelia africana Bushra Jabeena, Naheed Riaza, Muhammad Saleema, Muhammad Akram Naveeda, Maqsood Ahmeda, Muhammad Nawaz Tahirb, Gennaro Pescitellic, Muhammad Ashrafd, Syeda Abida Ejaze, Irshad Ahmede, and Abdul Jabbara a Department of Chemistry, Baghdad-ul-Jadeed Campus, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan b Department of Physics, University of Sargodha, Sargodha, Pakistan c Department of Chemistry, University of Pisa, via Risorgimento 35, I-56126, Pisa, Italy d Department of

A New Limonoid from Trichilia connaroides Zhao-Liang Genga,b, Xin Fanga, Ying-Tong Dia, Qiang Zhanga, Yue-Mao Shena, and Xiao-Jiang Haoa a State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, 132 Lanhei Road, Kunming 650204, P. R. China b Guizhou Tobacco Research Institute, North Yuntan Road, Jinyang New District, Guiyang, 550023, P. R. China Reprint requests to Prof. Dr. Xiao-Jiang Hao. Fax: +86-871-5150227. E-mail: Z. Naturforsch. 2010, 65b, 762 – 764; received

Red Mexican Grapefruit: A Novel Source for Bioactive Limonoids and their Antioxidant Activity Kranthi K. Mandadia,b, Guddadarangavvanahally K. Jayaprakashaa,b, Narayan G. Bhatc, and Bhimanagouda S. Patila,b,* a Vegetable and Fruit Improvement Center, Department of Horticultural Sciences, Texas A & M University, College Station, TX 77843, USA. Fax: 979-862-4522. E-mail: b Texas A & M University, Kingsville, Citrus Center, 312 N. International Blvd., Weslaco, TX 78596, USA c Department of Chemistry, The University of Texas-Pan American, 1201 W

1 Introduction Limonoids are a class of highly oxygenated tetranortriterpenoids with complex and diverse structures and are considered as good taxonomic markers in the Meliaceae family [ 1 ], [ 2 ]. This family, included in the order Rutales and subdivided into the four subfamilies, Swietenioideae, Melioideae, Quivisianthoideae, and Capuronianthoideae [ 3 ], consists of 51 genera containing about 1400 species, which grow in tropical and subtropical regions of both hemispheres [ 3 ]. In Cameroon, the Meliaceae family comprises six representative genera: Cedrela

© 2011 Verlag der Zeitschrift für Naturforschung, Tübingen · Introduction In the last decades considerable efforts have been devoted to the discovery of new sources of botanical insecticides and antifeedants. Among the plant families studied, Meliaceae and Ruta- ceae are perhaps the most promising (Schoon- hoven, 1982), at least partly due to the presence of limonoids and triterpenoids characteristic of the Rutales order. The biological activity of limo- noids from Rutales has been reviewed (Cham- pagne et al., 1992). Some neem