Yazar "Ulubelen, Ayhan" için listeleme
-
Alkaloids and coumarins from Ruta species
Ulubelen, Ayhan; Oeztuerk, Mehmet (Natural Products Inc, 2006)Although there are a number of Ruta species in the world, R. graveolens L., R. chalepensis L., R. montana (L.) L., R. angustifolia Pers. and R. pinnata L. fil. are the most studied. However, the first two of them have been ... -
Alkaloids, Coumarins and Lignans from Haplophyllum Species
Ulubelen, Ayhan; Öztürk, Mehmet (Acg Publications, 2008)Although there are a number of Haplophyllum species in the world, H. acutifolium (DC.) G. Don. H. buxbaumii (Poiret) G. Don, H. buxbaumii (Poiret) G. Don, subsp. Buxbaumii, H. cappadocium Spach, H. glabrinum, H. hispanicum ... -
Antioxidant activity tests on novel triterpenoids from Salvia macrochlamys
Topcu, Guelactu; Ertas, Abdulselam; Kolak, Ufuk; Oeztuerk, Mehmet; Ulubelen, Ayhan (Arkat Usa Inc, 2007)The methanol extract of Salvia macrochlamys Boiss. and Kotschy was fractionated on a silica gel column to yield a group of terpenic compounds. After separation and cleaning, seven known and three new terpenoid compounds ... -
Antioxidant and anticholinesterase constituents of Salvia poculata
Kolak, Ufuk; Hacıbekiroğlu, Işıl; Öztürk, Mehmet; Özgökçe, Fevzi; Topçu, Gülaçtı; Ulubelen, Ayhan (Scientific Technical Research Council Turkey-Tubitak, 2009)Two triterpenoids, namely 2 alpha,3 alpha-dihydroxy-24-nor-4(23), 12-oleanadien-28-oic acid (1) and ursolic acid (2); 4. avonoids, namely 5-hydroxy-7,4'-dimethoxyflavone (3), cirsimaritin (4), eupatilin (5), and salvigenin ... -
Antioxidant Diterpenoids from the Roots of Salvia barrelieri
Kolak, Ufuk; Kabouche, Ahmed; Öztürk, Mehmet; Kabouche, Zahia; Topçu, Gülaçtı; Ulubelen, Ayhan (John Wiley & Sons Ltd, 2009)Introduction - The phytochemical and biological studies carried out on Salvia species showed that their extracts and constituents have various biological activities. Objective - The aim of this study was the isolation of ... -
GC-MS Analysis and Antimicrobial Activity of Essential Oil of Stachys cretica subsp smyrnaea
Öztürk, Mehmet; Duru, Mehmet Emin; Aydoğmuş-Öztürk, Fatma; Harmandar, Mansur; Mahlıçlı, Melda; Kolak, Ufuk; Ulubelen, Ayhan (Natural Products Inc, 2009)The essential oil from the aerial parts of Stachys cretica L. subsp. smyrnaea Rech. fil. (Lamiaceae), endemic to Turkey, was investigated by using GC and GC-MS. Thirty-four of 37 components, represented 99.7% of the total ... -
A new flavone from antioxidant extracts of Pistacia terebinthus
Topçu, Gülaçtı; Ay, Mehmet; Bilici, Ali; Sarıkürkçü, Cengiz; Öztürk, Mehmet; Ulubelen, Ayhan (Elsevier Sci Ltd, 2007)Acetone and methanol extracts of the fruits of Pistacia terebinthus L. subsp. terebinthus L. were studied for their antioxidant activity by investigating their total phenolic and flavonoid contents, P-carotene bleaching ... -
Terpenoids, essential oil composition and fatty acids profile, and biological activities of Anatolian Salvia fruticosa Mill.
Topcu, Gulacti; Öztürk, Mehmet; Kusman, Tuba; Barla Demirkoz, Ayse Asli; Kolak, Ufuk; Ulubelen, Ayhan (Scientific Technical Research Council Turkey-Tubitak, 2013)The hexane and dichloromethane extracts, obtained by re-extraction of the methanol extract of Salvia fruticosa Mill., afforded 7 diterpenoids (carnosol, carnosic acid, carnosic acid 12-methyl ether, rosmadial, isorosmanol, ... -
Terpenoids, essential oil composition, fatty acid pro?le, and biological activities of Anatolian Salvia fruticosa Mill.
Topçu, Gülaçtı; Öztürk, Mehmet; Kuşman, Tuğba; Demirkoz, Ayşe Aslı Barla; Kolak, Ufuk; Ulubelen, Ayhan (2013)The hexane and dichloromethane extracts, obtained by re-extraction of the methanol extract of Salvia fruticosa Mill., a?orded 7 diterpenoids (carnosol, carnosic acid, carnosic acid 12-methyl ether, rosmadial, isorosmanol, ...
