Results 201 to 210 of about 22,763 (259)
A Stereoselective Synthesis of the C20-C32 Fragment of the Phorboxazoles
Synlett, 2007 The C20-C32 fragment of the phorboxazoles was realized in a stereoconvergent manner utilizing a desymmetrization approach. This successful strategy involves epimerization and modified Julia olefination as key steps.
J. Yadav +3 more
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Synthesis of the C23–C32 fragment of spirangien
Tetrahedron Letters, 2007Abstract The synthesis of the C23–C32 fragment of spirangien A is reported using Evans’ alkylation, Evans–Metternich aldol reaction and a substrate controlled stereoselective reduction.
Markus Kalesse
exaly +2 more sources
Mallotin—a new C32 triterpenoid from Mallotous stenanthus
Phytochemistry, 1975 Mallotin, a new C32 triterpene from Mallotous stenanthus, has been isolated and its structure established as 24,24-dimethyl-lanosta-7,25-dien-3a ...
D K Kulshreshtha, R P Rastogi
exaly +2 more sources
C32C36 polymethyl alkenes in Black Sea sediments
Geochimica et Cosmochimica Acta, 1995 Abstract A series of novel C 32 C 36 polymethylhentriacontenes has been identified in near-surface sediments of the Black Sea. Hydrogenation of these components indicated that they possess the 5,8,14,24,27-pentamethyl-, 8,14,24,27-tetramethyl-, 8,14,24-trimethyl-, 8,14-dimethyl-, and 14- and 15-methylhentriacontane C skeletons, which was confirmed ...
Jaap S. Sinninghe Damsté +5 more
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Chemical Data Collections, 2020
Abstract Since their discovery in 1985, Fullerenes have been an intriguing subject due to their structure and varying stabilities and potential use in medical and energy research. In this article, we present the temperature dependent thermodynamic stabilities of the C32, K@C32, Ca@C32, and Sc@C32 isomeric sets as computed at temperatures ranging from
Sarah A. Church +2 more
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Abstract Since their discovery in 1985, Fullerenes have been an intriguing subject due to their structure and varying stabilities and potential use in medical and energy research. In this article, we present the temperature dependent thermodynamic stabilities of the C32, K@C32, Ca@C32, and Sc@C32 isomeric sets as computed at temperatures ranging from
Sarah A. Church +2 more
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C32 CONSTRICTIVE PERICARDITIS WITH PLATYPNEA ORTHODEOXIA
European Heart Journal Supplements, 2023Abstract A 56–year–old woman is admitted to our centre for biventricular heart failure. In anamnesis she reports a submandibular phlegmon complicated by pleuropericarditis at the age of 13 years requiring repeated pericardiocentesis. In the last three years she has been hospitalised twice for ascites and discharged with a diagnosis of ...
L Gaiero +5 more
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Different isotope compositions of C32 DPEP and C32 etioporphyrin III in oil shale
The Science of Nature, 1989Le schiste bitumineux Julia Creek (Cretace, Australie) est utilise pour etudier la relation entre les cycloalkanoporphyrines et les polyalkylporphyrines a partir d'une comparaison des compositions ...
R, Ocampo +5 more
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Synthesis of the C10−C32 Core Structure of Spirangien A
Organic Letters, 2008The synthesis of the C10-C32 core structure of spirangien A is reported. The pivotal aldol coupling between both key intermediates provides a synthetic challenge in the synthesis of this complex natural product.
Michael, Lorenz, Markus, Kalesse
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Theoretical study of metallofullerenes M@C32
Journal of Molecular Structure: THEOCHEM, 1998Abstract 14 systems of metal atoms, embedded inside the C 32 cage, have been calculated and analyzed using the ab initio quantum chemistry Gamess program. We study their electronic structure, compare their stability. The metal atom with even electrons interjected inside the C 32 cage is more stable than the metal atom with odd electrons.
Lin, MH +4 more
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