Radical Cyclizations for the Synthesis of Pyrroloindoles: Progress toward the Flinderoles
作者:Joanne E. Curiel Tejeda、Bryan K. Landschoot、Michael A. Kerr
DOI:10.1021/acs.orglett.6b00768
日期:2016.5.6
Under the influence of Lewis acid catalysis, donor/acceptor cyclopropanes underwent nucleophilic ring opening by indolines. The resulting N-alkyl indolines bearing a pendant malonyl moiety oxidatively cyclized to 1,2-pyrroloindoles. This method was showcased by the preparation of the skeletal structure of the flinderoles.
Metal-Free N-Arylation of Indolines with Diaryliodonium Salts
作者:Boris Nachtsheim、Stefan Riedmüller
DOI:10.1055/s-0034-1379885
日期:——
KIKUGAWA Y., J. CHEM. RES. SYNOP., 1977, NO 8, 212-213
作者:KIKUGAWA Y.
DOI:——
日期:——
Using weak interactions to control C–H mono-nitration of indolines
作者:Anima Bose、Prasenjit Mal
DOI:10.1039/c7cc06267b
日期:——
mononitration of indolines either at -C5 or -C7 positions is reported here. The role of multiple weak interactions such as steric factors, electronic effects, cation-π interaction, solvent polarity, etc. was established for the 100% regioselective electrophilicaromatic (ArSE) nitration using Cu(NO3)2 or AgNO3.
The phytoalexins from cauliflower, caulilexins A, B and C: Isolation, structure determination, syntheses and antifungal activity
作者:M. Soledade C. Pedras、Mohammed G. Sarwar、Mojmir Suchy、Adewale M. Adio
DOI:10.1016/j.phytochem.2006.05.020
日期:2006.7
Our continuous search for phytoalexins from crucifers led us to examine phytoalexin production in florets of cauliflower (Brassica oleracea var. botrytis) under abiotic (UV light) elicitation. Four known (isalexin, S-(-)-spirobrassinin, 1-methoxybrassitin, brassicanal C) and three new (caulilexins A-C) phytoalexins were isolated. The syntheses and antifungal activity of caulilexins A-C against the
我们对来自十字花科植物的植物抗毒素的不断探索使我们研究了在非生物(紫外线)诱导下花椰菜(Brassica oleracea var. botrytis)小花中植物抗毒素的产生。分离了四种已知的(isalexin、S-(-)-spirobrassinin、1-methoxybrassitin、芸苔素 C)和三种新的(花椰菜素 AC)植物抗毒素。报道了花椰菜素 AC 对经济上重要的病原真菌 Leptosphaeria maculans、Rhizoctonia solani 和 Sclerotinia sclerotiorum 的合成和抗真菌活性,以及芸苔素 C 的首次合成。