Results 261 to 270 of about 19,542 (306)

Abstract C32: The function of GPR56 in metastasis formation of melanoma

Cancer Research, 2016
Abstract Disseminated cancer cells often persist in tissues for a long period before being manifested as clinically detectable metastases. This metastasis dormancy imposes a main threat for cancer patients, especially after their first line of cancer treatment.
Nancy Corson, Liquan Yang, Lei Xu
openaire   +2 more sources

Synthesis of the C20-C32 tetrahydropyran core of the phorboxazoles and the C22 epimer via a stereodivergent Michael reaction.

Organic Letters, 2012
A stereoselective synthesis of the C20-C32 tetrahydropyran core of the phorboxazoles has been achieved in only seven steps and in a 31% overall yield. The C22 epimer was also synthesized.
P. Clarke, Kristaps Ermanis
semanticscholar   +1 more source

Structures of three C32 triterpenoids from Neolitsea pulchella

Journal of the Chemical Society C: Organic, 1971
Three 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, H. R. Arthur, W. H. Hui, K. Luk   +3 more
openaire   +2 more sources

Electronic structures and spectral characteristics of the six C32 fullerene isomers

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2019
In 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, Jing Hu, Jun-Rong Zhang, Sheng-Yu Wang, Yong Ma, Xiu-Neng Song   +5 more
openaire   +3 more sources

Further C32 triterpenoids from Neolitsea pulchella

Journal of the Chemical Society, Perkin Transactions 1, 1973
Three 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
openaire   +2 more sources

Use of selected ion monitoring for detection of tuberculostearic and C32 mycocerosic acid in mycobacteria and in five-day-old cultures of sputum specimens from patients with pulmonary tuberculosis.

Acta Pathologica Microbiologica Scandinavica Section B Microbiology, 2009
Gas chromatography/mass spectrometry and selected ion monitoring (SIM), employing both electron (EI) and chemical ionization (CI), was used to detect 10-methyloctadecanoic (tuberculostearic) and 2, 4, 8, 8-tetramethyloctacosanoic (C32 mycocerosic) acids ...
L. Larsson, P. Mårdh, G. Odham, G. Westerdahl   +3 more
semanticscholar   +1 more source

C32. Greedy power allocation algorithm for proportional resource allocation in multi-user OFDM systems

National Radio Science Conference, 2012
Multi-User Orthogonal Frequency Division Multiplexing (MU-OFDM) is an efficient technique for achieving high downlink capacity in high-speed communication systems.
N. Odhah, M. Dessouky, W. Al-Hanafy, F. El-Samie   +3 more
semanticscholar   +1 more source

Mallotin—a new C32 triterpenoid from Mallotous stenanthus

Phytochemistry, 1975
Abstract 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, Dinesh K. Kulshreshtha, R.P. Rastogi   +2 more
openaire   +2 more sources

Blurring the Boundary between Bio‐ and Geohopanoids: Plakohopanoid, a C32 Biohopanoid Ester from Plakortis cf. lita

, 2012
Plakohopanoid (3a), a new type of hopanoid derivative composed of a C32 hopanoid acid ester linked to a mannosyl-myo-inositol, was isolated from the sponge Plakortis cf. lita as its peracetyl derivative 3b.
V. Costantino, G. D. Sala, A. Mangoni, C. Perinu, R. Teta   +4 more
semanticscholar   +1 more source

IUPAC-NIST Solubility Data Series. 88. Esters with Water-Revised and Updated. Part 4. C10 to C32 Esters

, 2010
The mutual solubilities and related liquid-liquid equilibria of 46 binary systems of C10 to C32 esters with water are exhaustively and critically reviewed.
M. Góral, D. Shaw, A. Maczyński, Barbara Wiśniewska-Gocłowska   +3 more
semanticscholar   +1 more source