�ber Steroide. 84. Mitteilung. Abbauprodukte der Cholesterionoxydation V. Konstitutionsaufkl�rung des ?5-3?,17-Dioxy-cholens�ure-Lactons-(24 ? 17)
作者:J. R. Billeter、K. Miescher
DOI:10.1002/hlca.19490320226
日期:1949.3.15
Der Vergleich einiger Umwandlungsprodukte des bei der Oxydation von Cholesterin-acetat-dibromid entstehenden Lactons mit analogen, synthetisch gewonnenen, in 20-Stellung epimeren 20-Oxy-24,24-dimethyl-allo-cholanen zeigt keine Übereinstimmung ihrer Eigenschaften. In Verbindung mit unseren früheren Befunden ergibt sich daraus für das Lacton die Konstitution eines δ5-3β,17-Dioxy-cholensäure-Lactons-(2417)
Fieser et al., Journal of the American Chemical Society, 1948, vol. 70, p. 3177
作者:Fieser et al.
DOI:——
日期:——
Synthesis, resolution, and antiplatelet activity of 3-substituted 1(3H)-isobenzofuranone
作者:Hua Yang、Gao-Yun Hu、Jun Chen、Yi Wang、Zhong-Hua Wang
DOI:10.1016/j.bmcl.2007.06.082
日期:2007.9
A series of 3-substituted-1(3H)-isobenzofuranone 6a-g and 7a-g were synthesized from phthalic anhydride. The compound 6a-g was resolved. The antiplatelet activities of these compounds were evaluated using in vitro experiment of platelet aggregation. The levels of antiplatelet activity were displayed as following sequence: l-isomer > dl-isomer > d-isomer, respectively. The alkylphthalide is more active than the corresponding alkenephthalide. All these compounds were less active than n-butylphthalide (NBP, 6c) and Aspirin (Asp). (c) 2007 Elsevier Ltd. All rights reserved.
Cason; Prout, Organic Syntheses, 1955, vol. Coll. Vol. III, p. 601,602, 604