Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Shamsun N. Khan"'
Autor:
Rizwana Razi, Bakhat Ali, Muhammad I. Chaudhry, Munawar Hussain, Zaheer Ahmed, Muhammad Khalid, Faisal Nawaz, Muhammad Irshad, Syed Adnan Ali Shah, Syahrul Imran, Shamsun N. Khan
Publikováno v:
Current Organic Chemistry. 23:1857-1866
Three new 5-deoxyflavonoid and dihydroflavonoids 2, 3 and 4 have been isolated from the methanolic extract of Abutioln pakistanicum aerial parts, for which structures were elucidated explicitly by extensive MS- and NMR-experiments. In addition to the
Autor:
Bonaventure T. Ngadjui, Afshan Begum, Pascal Wafo, Shamsun N. Khan, Zulfiqar Ali, Ramsay S.T. Kamdem, Ogbole O. Oluyemisi, M. I. Choudhary, Xavier F. Etoa, Shazia Anjum
Publikováno v:
Fitoterapia. 82:642-646
A new diterpenoid, 15-angeloyloxy-16,17-epoxy-19-kauronic acid (1), along with five known metabolites, 16-kauren-19-oic acid (2), 6'-hydroxy-2',3',4,4'-tetramethoxychalcone (3), isosakuranetin (4), acacetin (5), and kaempferide (6) was isolated from
Publikováno v:
Records of Natural Products, Vol 3, Iss 4, Pp 198-203 (2009)
Phytochemical investigations were performed in two plant species used in Sudanese traditional medicines to treat different illnesses, Diospyros mespiliformis and Croton zambesicus. The investigations revealed compounds of triterpenes (lupane series),
Autor:
Syed Adnan Ali Shah, Shamsun N. Khan, Atta ur-Rahman, M. I. Choudhary, Iffat Batool, Sultana N
Publikováno v:
Natural product research. 22(6)
The biotransformation of a pentacyclic triterpene, oleanolic acid (1), with Fusarium lini afforded two oxidative metabolites, 2alpha,3beta-dihydroxyolean-12-en-28-oic acid (2), and 2alpha,3beta,11beta-trihydroxyolean-12-en-28-oic acid (3). Metabolite
Autor:
Khalid Mohammed Khan, Shamsun N. Khan, Uzma Ashiq, Muhammad Iqbal Choudhary, Rifat Ara, Zahida Tasneem Maqsood, Hina Siddiqui, Mohammad Mahroof-Tahir
Publikováno v:
Chemistrybiodiversity. 5(1)
The synthesis, spectroscopic, enzyme-inhibition, and free-radical-scavenging properties of a series of vanadium(IV) complexes, compounds 1-10, were investigated. These complexes exhibit a dimeric structure with hydrazide ligands coordinated in a bide
Autor:
Muhammad Iqbal Choudhary, Shamsun N. Khan, Muhammad Arif Lodhi, Latif Hussain, Farzana Latif Ansari, Sarfraz Ahmad Nawaz, Atta-ur-Rahman, Talat Makhmoor, Sumaira Umbreen, Farzana Shaheen
Publikováno v:
Chemistrybiodiversity. 2(4)
A series of 2,4-diaryl-2,3,4,5-tetrahydro- (36-40) and 2,4-diaryl-2,3-dihydro-1,5-benzothiazepines (25-35) have been synthesized from the corresponding chalcones 1-24. Both the benzothiazepines and chalcones were evaluated as DPPH free-radical scaven
Autor:
Mohammad A. Shaiq, Turibio Kuiate Tabopda, Joseph Ngoupayo, Bruno Ndjakou Lenta, Shamsun N. Khan, Etienne Tsamo, Diderot T. Noungoue, Silvère Ngouela
Publikováno v:
Natural Product Communications. 2:1934578X0700201
Brevipsidone (1), a new depsidone was isolated from the methanol extract of the stem bark of Garcinia brevipedicellata together with known damnacanthal (2), pilloin (3), scopoletin (4). The structure of the new compound was determined by analysis of