65090-78-0Relevant articles and documents
Tailored Synthesis of Skeletally Diverse Stemona Alkaloids through Chemoselective Dyotropic Rearrangements of β-Lactones
Guo, Zhen,Bao, Ruiyang,Li, Yuanhe,Li, Yunshan,Zhang, Jingyang,Tang, Yefeng
supporting information, p. 14545 - 14553 (2021/05/31)
The collective synthesis of skeletally diverse Stemona alkaloids featuring tailored dyotropic rearrangements of β-lactones as key elements is described. Specifically, three typical 5/7/5 tricyclic skeletons associated with stemoamide, tuberostemospiroline and parvistemonine were first accessed through chemoselective dyotropic rearrangements of β-lactones involving alkyl, hydrogen, and aryl migration, respectively. By the rational manipulation of substrate structures and reaction conditions, these dyotropic rearrangements proceeded with excellent efficiency, good chemoselectivity and high stereospecificity. Furthermore, several polycyclic Stemona alkaloids, including saxorumamide, isosaxorumamide, stemonine and bisdehydroneostemoninine, were obtained from the aforementioned tricyclic skeletons through late-stage derivatizations. A novel visible-light photoredox-catalyzed formal [3+2] cycloaddition was also developed, which offers a valuable tool for accessing oxaspirobutenolide and related scaffolds.
N-Substituted amino acid N′-benzylamides: Synthesis, anticonvulsant, and metabolic activities
Beguin, Cecile,LeTiran, Arnaud,Stables, James P.,Voyksner, Robert D.,Kohn, Harold
, p. 3079 - 3096 (2007/10/03)
Amino acid amides (AAA) were prepared and evaluated in seizure models. The AAA displayed moderate-to-excellent activity in the maximal electroshock seizure (MES) test and were devoid of activity in the subcutaneous Metrazol-induced (scMet) seizure test. The AAA anticonvulsant activity was neither strongly influenced by the C(2) substituent nor by the degree of terminal amine substitution. An in vitro metabolism study suggested that the structure-activity relationship pattern was due, in part, to metabolic processes that occurred at the N-terminal amine unit.
N-ALKYNYL-2- (SUBSTITUTED PHENOXY) ALKYLAMIDES AND THEIR USE AS FUNGICIDES
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Page 42, (2010/02/07)
Fungicidal compounds of the general formula (1) wherein X, Y, Z, R1, R2, R3, R4 and R5 have the definitions given in claim 1.