Yasuyoshi Miyachi

An efficient enantioselective synthesis of the (-)-N-ethoxycarbonylmethyl Geissman-Waiss lactone: a practical synthetic route to (+)-retronecine

Haruki Niwa, Osamu Okamoto, Yasuyoshi Miyachi et al. · The Journal of Organic Chemistry · 1987 · 40 citations

Natural Sciences, Chemistry, Medicinal Chemistry +7

Total synthesis of optically active integerrimine, a twelve-membered dilactonic pyrrolizidine alkaloid of retronecine type

Haruki Niwa, Yasuyoshi Miyachi, Osamu Okamoto et al. · Tetrahedron · 1992 · 27 citations

Natural Sciences, Chemistry, Medicinal Chemistry +10

Total synthesis of optically active integerrimine, a twelve-membered dilactonic pyrrolizidine alkaloid of retronecine type. II. Enantioselective synthesis of (+)-retronecine

Haruki Niwa, Yasuyoshi Miyachi, Osamu Okamoto et al. · Tetrahedron Letters · 1986 · 19 citations

Natural Sciences, Chemistry, Medicinal Chemistry +10

Enzymatic hydrolysis of random copolypeptides consisting of N-hydroxyethyl-l-glutamine and l-alanine, l-leucine, or l-valine

Kazuyuki Jokei, Masahito Oka, Toshio Hayashi et al. · European Polymer Journal · 1999 · 15 citations

Life Sciences, Biochemistry, Molecular Biology +7

Total synthesis of optically active integerrimine, a twelve-membered dilactonic pyrrolizidine alkaloid of retronecine type. III. Regioselective elaboration of the unsymmetrical twelve-membered dilactone and total synthesis of (-)-integerrimine

Haruki Niwa, Yasuyoshi Miyachi, Youichi Uosaki et al. · Tetrahedron Letters · 1986 · 12 citations

Pharmacy, Chemistry, Medicinal Chemistry +11