Oron G,Ben-Haroush A,Goldfarb R,et al.Contribution of the addition of anti-β2-glycoprotein to the classification of antiphospholipid syn-drome in predicting adverse pregnancy outcome. Journal of Maternal Fetal and Neonatal Medicine . 2011
It was found that the hydrochlorination prefers syn addition (syn/anti=5:1) of HCl in solution, whereas a thermodynamic ratio (1:3) of syn and anti addition products was obtained under the (COCl)2/alumina conditions (equation 13). The authors mentioned that silica gel and alumina surfaces...
Using a similar assay, [1,3-H-3]benzo[a]pyrene (+/-)-anti-7,8-dihydrodiol 9,10-epoxide [(+/-)-anti-BPDE], and unlabeled (+/-)-syn-BPDE and (+/-)-anti-BADE were tested as substrates for DD. Incubations were performed in the presence of 2.3 mM NADP+ in either potassium ...
STEPHEN G. DAVIES ET AL: " Asymmetric synthesis of 3,4-anti- and 3,4-syn-substituted aminopyrrolidines via lithium amide conjugate addition ", ORGANIC & BIOMOLECULAR CHEMISTRY, vol. 5, no. 12, 1 January 2007 (2007-01-01), page 1961, XP055006812, ISSN: 1477-0520, DOI: 10.1039/b70...
No.CompoundYield (%)syn/anti 1 105a: R=Ph(CH2)2 94 89/11 2 105b: R=CH3(CH2)4 88 88/12 3 105c: R=i-Bu 84 84/16 4 105d: R=Me(C=O)(CH2)2 91 93/7 5 105e: R=BnO(CH2)2 81 86/14 6 105f: R=BnOCH2 84 72/28 7 105g: R=i-Pr 83 97/3 8 105h: R=Et2CH...
but all providesyn-configured products. Here, we present a tripeptide as a general catalyst for the synthesis ofanti-configured γ-nitroaldehydes. Key to theantiselectivity is the installation of substituents at Cδ of the reactive pyrrolidine of proline to enable the formation of s-cisenamine ...
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The trans isomer forms only the syn addition product, while the cis isomer forms a mixture of the syn and anti addition products, indicative of partial conformational equilibrium in the biradical derived from the cis isomer, but not the trans isomer. 1274 F. D. LEWIS, D. M. BASSANI AND...
In their approach, the Boc-deprotection probably constitutes the initial step in the reaction sequence, though it may also occur before the secondMichael addition. The first step in the threefold domino sequence is the formation of154from153, which seems to be completelysyn-selective. In the seco...
These data revealed that the reaction studied was the first example of anti-Markovnikov syn-addition of TeCl4 to terminal acetylenes. A computed simulation of the TeCl4 interaction with ethynyl silane 1 in a gas state using PES method did not reveal dominating orientation of the addition but ...