Classification of three generation models by orbifolding magnetized T2×T2T^2 \times T^2

We study orbifolding by the $\mathbb{Z}_2^{\rm (per)}$ permutaion of $T^2_1 \times T^2_2$ with magnetic fluxes and its twisted orbifolds. We classify the possible three generation models which lead to non-vanishing Yukawa couplings on the magnetized $T^2_1 \times T^2_2$ and orbifolds including the $\mathbb{Z}_2^{\rm (per)}$ permutation and $\mathbb{Z}_2^{\rm (t)}$ twist. We also study the modular symmetry on such orbifold models. As an illustrating model, we examine the realization of quark masses and mixing angles.Comment: 31 page

A Convergent Total Synthesis of the Kedarcidin Chromophore: 20-Years in the Making

The kedarcidin chromophore is a formidible target for total synthesis. Herein, we 19 describe a viable synthesis of this highly unstable natural product. This entailed the early 20 introduction and gram-scale synthesis of 2-deoxysugar conjugates of both L-mycarose and L21 kedarosamine. Key advances include: (1) stereoselective allenylzinc keto-addition to form an 22 epoxyalkyne; (2) -selective glycosylations with 2-deoxy thioglycosides (AgPF6/DTBMP) 23 and Schmidt donors (TiCl4); (3) Mitsunobu aryl etherification to install a hindered 1,2-cis24 configuration; (4) atropselective and convergent Sonogashira-Shiina cyclization sequence; 25 (5) Ohfune-based amidation protocol for naphthoic acid; (6) Ce(III)-mediated nine26 membered enediyne cyclization and ester/mesylate derivatisation; (7) SmI2-based reductive 27 olefination and global HF-deprotection end-game. The longest linear sequence from gram28 scale intermediates is 17-steps, and HRMS data of the synthetic natural product was obtained 29 for the first tim

関西大学日本ポピュラー音楽アーカイブ・ミュージアムプロジェクト研究成果報告書

2014年度、2015年度 関西大学研究拠点形成支援経費報告