Results 271 to 280 of about 76,304 (321)
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Structures of three C32 triterpenoids from Neolitsea pulchella
Journal of the Chemical Society C: Organic, 1971Three triterpenoids isolated from Neolitsea pulchella, have been proved by n.m.r. and mass spectral data, and chemical correlations with one another and with cycloneolitsin (3β-methoxy-24,24-dimethyl-9,19-cyclolanost-25-ene) to be 3β-methoxy-24,24-dimethyl-lanosta-9(11),25-diene (I), 24,24-dimethyl-lanosta-9(11),25-dien-3-one (II), and 24ξ-hydroxy-3β ...
S. N. Loo +3 more
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Electronic structures and spectral characteristics of the six C32 fullerene isomers
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2019In this paper, the six C32 isomers which were of crucial importance in the manufacture of new electronic components were identified by X-ray photoelectron spectroscopy (XPS) and near-edge X-ray absorption fine structure (NEXAFS). For the discernment, geometry optimizations of the six isomers have been carried out, and the C1s XPS and NEXAFS spectra ...
Juan Lin +5 more
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Further C32 triterpenoids from Neolitsea pulchella
Journal of the Chemical Society, Perkin Transactions 1, 1973Three further C32 triterpenoids isolated from the stems of Neolitsea pulchella, have been shown to be 3β,24ξ-dimethoxy-24,25-dimethyl-lanost-9(11)-ene (I). 24ξ-methoxy-24,25-dimethyl-lanost-9(11)-en-3-one (II), and 24,24-dimethyl-lanosta-9(11),25-dien-3β-ol (III). Compounds (I) and (II) are new.
Wai-Haan Hui, Wai-Shing Chan
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Mallotin—a new C32 triterpenoid from Mallotous stenanthus
Phytochemistry, 1975Abstract Mallotin, a new C 32 triterpene from Mallotous stenanthus , has been isolated and its structure established as 24,24-dimethyl-lanosta-7,25-dien-3α-ol.
Raghwendra Pal +2 more
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Biosynthèse de l'acide C32-mycocérosique incorporation d'acide propionique
Biochimica et Biophysica Acta, 1963Abstract [I-14C]Propionic acid is incorporated into the branched end of C32-mycocerosic acid and of its lower C26-homolog.
Gastambide Odier M +2 more
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Synthesis of a Bistetrahydrofuran C17−C32 Fragment of the Polyether Antibiotic Ionomycin
Organic Letters, 2006A Zn-initiated triepoxide cascade cyclization reaction was employed for the synthesis of the bistetrahydrofuran core segment of the polyether ionophore antibiotic ionomycin.
James A. Marshall, Ann M. Mikowski
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C32. A New Proposed Anti-collision Algorithm for RFID
2013 30th National Radio Science Conference (NRSC), 2013Abstract-Radio Frequency Identification (RFID) systems are used in a variety of applications to uniquely identify physical objects. However, the most popular problem that always faces RFID systems is the collision between several tags that are present in the interrogation zone of a single reader at the same time. So, the reader will receive data, which
Hania H. Farag +2 more
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Isolation and identification of two hydroxy C32 and C30 deoxophylloerythroetioporphyrins
Organic Geochemistry, 1984Two unusual 10-hydroxy C32 and C30 deoxophylloerythroetioporphyrins (DPEPs) have been characterized by high resolution high field 1H nuclear magnetic resonance and nuclear Overhauser effect studies and by fast atom bombardment and electron impact mass spectrometry.
Tore Skjetne +5 more
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Orthorhombic C32: A topological semimetal with nodal ring
Physics Letters A, 2022Ye Tao, Kun Bu, Jian-Tao Wang
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A stereoselective synthesis of the C16-C32 fragment of ionomycin
1988This dissertation concerns the stereoselective synthesis of optically pure compound 196, the C₁₆-C₃₂ fragment of the polyether antibiotic ionomycin (1). Fragment 196 was synthesized by preparing and joining the two subunits 172 (C₁₆-C₂₂) and 122 (C₁₆-C₃₂).
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