85604-06-4Relevant articles and documents
Access to 6a-Alkyl Aporphines: Synthesis of (±)-N-Methylguattescidine
Ku, Angela F.,Cuny, Gregory D.
, p. 10062 - 10070 (2016)
(-)-N-Methylguattescidine (3) is an alkaloid recently isolated from Fissistigma latifolium and assigned as a rare example of a 6a-alkyl aporphine. Herein, we report the synthesis of (±)-3 and the des-hydroxyl derivative 4 using our previously reported ortho-phenol arylation methodology mediated by the XPhos precatalyst as a key synthetic step. In addition, substituents on the aryl halide portion of the ortho-phenol arylation substrates significantly influenced the formation of an oxidized side product.
Design and synthesis of π-extended resveratrol analogues and in vitro antioxidant and anti-inflammatory activity evaluation
Damodar, Kongara,Gim, Ji Geun,Jeon, Seong Ho,Lee, Jeong Tae,Lee, Yeontaek,Nam, Ki Yoon,Park, Jae Phil,Park, Lee Seul
supporting information, (2021/06/14)
The research on resveratrol (1) has been conducted intensively over a long time due to its proven antioxidant activity and disease-fighting capabilities. Many efforts have also been made to increase these biological effects. In the present study, six new extended aromatic resveratrol analogues containing naphthalene (2) and its bioisosteres quinoline (3 and 4), isoquinoline (5) quinoxaline (6) and quinazoline (7) scaffolds were designed and synthesized using an annulation strategy. The antioxidant and anti-inflammatory activities of these compounds were investigated. All compounds showed better antioxidant activity than resveratrol in ABTS assay. As for the anti-inflammatory test, 5 and 7 exhibited better activity than resveratrol. It is worth noting that nitrogen substitution on the extended aromatic resveratrol analogues has a significant impact on cell viability. Taking the antioxidant activities and NO inhibition activities into consideration, we conclude that isoquinoline analogue 5 may qualify for the further investigation of antioxidant and anti-inflammatory therapy. Furthermore, our study results suggest that in order to improve the biological activity of polyphenolic compounds, extended aromaticity and nitrogen substitution strategy could be a viable method for the design of future drug candidates.
1,4-Palladium Shift/C(sp3)-H Activation Strategy for the Remote Construction of Five-Membered Rings
Rocaboy, Ronan,Baudoin, Olivier
supporting information, p. 1434 - 1437 (2019/02/19)
1,n-Metal shift is an elegant alternative approach enabling the functionalization of remote C-H bonds from simple precursors. In this work, we report a novel and simple Pd0-catalyzed domino reaction involving 1,4-palladium shift and C(sp3)-H activation and leading to (fused) five-membered rings. This method allowed access to a broad range of valuable arylidene γ-lactams and indanones and was applied to the formal synthesis of (-)-pyrrolam.