62174-08-7Relevant academic research and scientific papers
I2/TBHP mediated diastereoselective synthesis of spiroaziridines
Ashitha, Kizhakkan Thiruthi,Vinaya, Puthiya Purayil,Krishna, Ajay,Vincent, Deepthy Cheeran,Jalaja, Renjitha,Varughese, Sunil,Somappa, Sasidhar Balappa
supporting information, p. 1588 - 1593 (2020/03/06)
Eventhough spiroheterocycles are considered as emerging drug candidates, synthesis of spiroaziridines has not been well explored so far. Herein, we disclose an efficient I2/TBHP mediated diastereoselective synthesis of N-alkyl spiroaziridines from primary amines and easily accessible α,β-unsaturated ketones. The reaction is also compatible for the synthesis of 2-aroylaziridines.
A Convenient Palladium-Catalyzed Carbonylative Synthesis of (E)-3-Benzylidenechroman-4-ones
Wang, Wei-Feng,Peng, Jin-Bao,Qi, Xinxin,Ying, Jun,Wu, Xiao-Feng
, p. 3521 - 3524 (2019/02/14)
A convenient palladium-catalyzed carbonylation reaction for the efficient synthesis of (E)-3-benzylidenechroman-4-ones has been developed. Using TFBen as a solid CO source, a range of substituted (E)-3-benzylidenechroman-4-ones were prepared in moderate to good yields with 2-iodophenols and allyl chlorides as the substrates. Additionally, substituted quinolin-4(1H)-ones can also be obtained with 2-iodoaniline as the starting material.
Synthesis and biological evaluation of 3-benzylidene-4-chromanone derivatives as free radical scavengers and α-glucosidase inhibitors
Takao, Koichi,Yamashita, Marimo,Yashiro, Aruki,Sugita, Yoshiaki
, p. 1203 - 1207 (2016/08/11)
A series of 3-benzylidene-4-chromanone derivatives (3-20) were synthesized and the structure-activity relationships for antioxidant and α-glucosidase inhibitory activities were evaluated. Among synthesized compounds, compounds 5, 13, 18, which contain catechol moiety, showed the potent 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging activity (5: EC50 13 μM; 13: EC50 14 μM; 18: EC50 13 μM). The compounds 12, 14, 18 showed higher α-glucosidase inhibitory activity (12: IC50 15 μM; 14: IC50 25 μM; 18: IC50 28 μM). The compound 18 showed both of potent DPPH radical scavenging and α-glucosidase inhibitory activities. These data suggest that 3-benzylidene-4-chromanone derivatives, such as compound 18, may serve as the lead compound for the development of novel α-glucosidase inhibitors with antioxidant activity.
Structural studies of seven homoisoflavonoids, six thiohomoisoflavonoids, and four structurally related compounds
Valkonen, Arto,Laihia, Katri,Kolehmainen, Erkki,Kauppinen, Reijo,Perjesi, Pal
experimental part, p. 209 - 217 (2012/09/07)
1H and 13C NMR chemical shifts have been determined and assigned based on PFG 1H, 13C HM...C, and HMBC experiments for 3-(4'-X-benzyl)-4-chromenones (Ia, X = CN and Ib, X = NO 2), 3-(4'-X-benzyl)-4-th
Facile condensation of aromatic aldehydes with chroman-4-ones and 1-thiochroman-4-ones catalysed by amberlyst-15 under microwave irradiation condition
Mandal, Tapas K.,Pal, Rammohan,Mondal, Rina,Mallik, Asok K.
experimental part, p. 863 - 869 (2012/02/15)
Different aromatic aldehydes and cinnamaldehyde undergo crossaldol condensation with chroman-4-ones and 1-thiochroman-4-ones in the presence of amberlyst-15 under microwave irradiation in solvent free condition to afford rapidly the corresponding E-3-arylidene and E-3-cinnamylidene derivatives, respectively, in high yield. This process is simple, efficient and environmentally benign.
Topochemical photodimerization of (E)-3-benzylidene-4-chromanone derivatives from β-type structures directed by halogen groups
Cheng, Xue-Ming,Huang, Zhi-Tang,Zheng, Qi-Yu
experimental part, p. 9093 - 9098 (2011/12/01)
Halogen substituent plays an important role in the crystalline packing of aromatic compounds. The [2+2] photocycloaddition of (E)-3-benzylidene-4- chromanones in the crystalline state was investigated, and halogen substitution has been adopted to organize molecules with proper arrangement for photodimerization. Not halogen bonds, but the electron-withdrawing property of halogen atoms can enhance the face-to-face π-π interactions. Therefore, F, Cl or Br substitution at the para position of phenyl gave rise to almost the same β-structures with face-to-face π-stacking. Only resulted β-structures can undergo photodimerization, which gave the syn-HH (syn-head-to-head) products with high regio-/stereoselectivity.
Synthesis and antirhinovirus activity of new 3-benzyl chromene and chroman derivatives
Conti, Cinzia,Desideri, Nicoletta
body text, p. 3720 - 3727 (2009/10/02)
A series of 3-benzyl chromenes and chromans were synthesized and tested in vitro against human rhinovirus (HRV) 1B and 14, two representative serotypes for rhinovirus group B and A, respectively. All the new compounds, with the exception of 3-benzyl-2H-chromene (3a), showed a potent activity against HRV serotype 1B within micro or submicromolar range (IC50s from 0.11 to 6.62 μM). The low cytotoxicity of all the derivatives resulted in compounds with high therapeutic index (TI). On the contrary, HRV 14 infection was only weakly inhibited by the majority of these compounds. The 3-benzylidenechromans 2b and 2c showed the highest anti-HRV 1B activity (IC50 0.12 and 0.11 μM, respectively) coupled with remarkable TI (625.00 and 340.91, respectively). Mechanism of action studies on (Z)-3-(4-chlorobenzylidene)chroman (2b) suggest that the new compounds behave as capsid binders and interfere with very early stages of HRV 1B replication, similarly to related flavanoids.
Design, synthesis and antiproliferative activity of some 3-benzylidene-2,3-dihydro-1-benzopyran-4-ones which display selective toxicity for malignant cells
Perjesi, Pal,Das, Umashankar,De Clercq, Erik,Balzarini, Jan,Kawase, Masame,Sakagami, Hiroshi,Stables, James P.,Lorand, Tamas,Rozmer, Zsuzsanna,Dimmock, Jonathan R.
, p. 839 - 845 (2008/09/20)
A series of 3-benzylidene-4-chromanones 1a-l were prepared and their cytotoxicity towards human Molt 4/C8 and CEM T-lymphocytes as well as murine L1210 lymphoid leukemia cells were compared to the previously generated biodata in these three assays for the
One-pot synthesis of trans-7-aryl-6H-6a,7-dihydro[1]benzopyrano[3,4-c][1,5]benzothiazepines
Sathunuru, Ramadas,Koh, Benjamin,Zhang, Hongming,Biehl, Ed
, p. 2493 - 2503 (2007/10/03)
Green chemical approaches for the condensation reaction of benzenethiols and 3-arylidenenchroman-4-ones as synthons for the synthesis of a series of newtrans-7-aryl-6H-6a,7-dihydro[1]benzo pyrano[3,4-c][1,5]benzothiazepines which may possess potential biological activity are described.{A figure is presented}.
Novel synthesis of N-methyl spiropyrrolidines by 1,3-dipolar cycloaddition reaction of azomethine ylides
Subramaniyan,Jayashankaran,Raghunathan
, p. 2189 - 2193 (2007/10/03)
A series of novel N-methyl spiropyrrolidines have been synthesized in good yield by the cycloaddition reaction of azomethine ylides generated by a decarboxylative route from sarcosine and paraformaldehyde with conformationally locked s-trans enone functionality present in the (E)-3-arylidene-4-chromanone as dipolarophiles. The structure of the title compound was established by spectroscopic techniques. Copyright Taylor & Francis, Inc.
