Results 191 to 200 of about 24,513 (247)
Some of the next articles are maybe not open access.
Different isotope compositions of C32 DPEP and C32 etioporphyrin III in oil shale
Die Naturwissenschaften, 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 ...
Brian N Popp, R Ocampo
exaly +4 more sources
C32-amino derivatives of the immunosuppressant ascomycin
Bioorganic and Medicinal Chemistry Letters, 1997Abstract Various C32-amino derivatives were investigated as replacements for the C32-hydroxyl group of ascomycin and its C24-deoxy analog. The syntheses of these amino derivatives and their biological evaluation are reported herein.
Matthew J Wyvratt +2 more
exaly +2 more sources
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.
Markus Kalesse
exaly +3 more sources
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
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
openaire +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
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
openaire +1 more source
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
openaire +1 more source
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
openaire +1 more source
Theoretical study on C32 fullerenes and derivatives
Chemical Physics Letters, 2006Abstract A series of B3LYP/6-31G∗ calculations reveal that the D3 isomer is the most stable isomer of C32 carbon cages. The derivatives of it, including additional productions (C32H2, C32Cl2), hetero-fullerenes (C30B2, C30N2), isoelectronic molecules ( C 30 B 2 2 - , C 30 N 2 2 + ) and dimers have ...
Yingfei Chang +4 more
openaire +1 more source