start-ver=1.4 cd-journal=joma no-vol=86 cd-vols= no-issue=14 article-no= start-page=9802 end-page=9810 dt-received= dt-revised= dt-accepted= dt-pub-year=2021 dt-pub=202177 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Toward the Synthesis of Paspaline-Type Indole-Terpenes: Stereoselective Construction of Core Scaffold with Contiguous Asymmetric Quaternary Carbon Centers en-subtitle= kn-subtitle= en-abstract= kn-abstract=The core scaffold of paspaline-type indole-terpenes was synthesized by using the House?Meinwald rearrangement as a key step. Rearrangement of the epoxide methyl group in the precursor with MABR (methylaluminum bis(4-bromo-2,6-di-tert-butylphenoxide)) as a Lewis acid proceeded smoothly to construct contiguous asymmetric quaternary carbon centers by a 1,2-chirality transfer. en-copyright= kn-copyright= en-aut-name=HayakawaIchiro en-aut-sei=Hayakawa en-aut-mei=Ichiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=MatsumaruNaochika en-aut-sei=Matsumaru en-aut-mei=Naochika kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=SakakuraAkira en-aut-sei=Sakakura en-aut-mei=Akira kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= affil-num=1 en-affil=Graduate School of Integrated Basic Sciences, Nihon University, 3-25-40 Sakurajosui, Setagaya-ku, Tokyo 156-8550, Japan kn-affil= affil-num=2 en-affil=Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushima-naka, Kita-ku, Okayama 700-8530, Japan kn-affil= affil-num=3 en-affil=Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushima-naka, Kita-ku, Okayama 700-8530, Japan kn-affil= END start-ver=1.4 cd-journal=joma no-vol=55 cd-vols= no-issue=27 article-no= start-page=3923 end-page=3926 dt-received= dt-revised= dt-accepted= dt-pub-year=2019 dt-pub=20190407 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Catalytic enantioselective Hosomi-Sakurai reaction of ƒ¿-ketoesters promoted by chiral copper(ii) complexes en-subtitle= kn-subtitle= en-abstract= kn-abstract= A catalytic enantioselective Hosomi?Sakurai reaction of ƒ¿-ketoesters has been developed. A copper(II) complex with a chiral bis(oxazoline) ligand bearing methanesulfonamide groups shows excellent catalytic activity to give ƒ¿,ƒ¿-disubstituted ƒ¿-hydroxyesters in high yields with high enantioselectivities. This is the first successful method for the catalytic enantioselective 1,2-addition of ƒ¿-ketoesters with allylic silanes. en-copyright= kn-copyright= en-aut-name=NiwaYutaro en-aut-sei=Niwa en-aut-mei=Yutaro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=MiyakeMayu en-aut-sei=Miyake en-aut-mei=Mayu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=HayakawaIchiro en-aut-sei=Hayakawa en-aut-mei=Ichiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=SakakuraAkira en-aut-sei=Sakakura en-aut-mei=Akira kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= affil-num=1 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=2 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=3 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= affil-num=4 en-affil=Graduate School of Natural Science and Technology, Okayama University kn-affil= END