D. I. JOHN

Preparation of 6α-monosubstituted and 6,6-disubstituted penicillanates from 6-diazopenicillanates: reactions of 6-diazopenicillanates with alcohols, thiols, phenylseleninyl compounds, and allylic sulphides, and their analogues

Peter J. Giddings, D. I. JOHN, Eric J. Thomas et al. · Journal of the Chemical Society Perkin Transactions 1 · 1982 · 38 citations

Natural Sciences, Chemistry, Medicinal Chemistry +10

Reduction of 6α-alkyl-6β-isocyanopenicillanates by tri-n-butyltin hydride. A stereoselective synthesis of 6β-alkylpenicillanates

D. I. JOHN, Eric J. Thomas, Nicholas D. Tyrrell · Journal of the Chemical Society Chemical Communications · 1979 · 31 citations

Natural Sciences, Chemistry, Medicinal Chemistry +4

Stereoselective preparation of 6β -substituted penicillanates

D. I. JOHN, Nicholas D. Tyrrell, Eric J. Thomas · Tetrahedron · 1983 · 24 citations

Pharmacy, Chemistry, Medicinal Chemistry +9

Some lewis acid catalysed reactions of 2,2,2-trichloroethyl 6-diazopenicillanate

Peter J. Giddings, D. I. JOHN, Eric J. Thomas · Tetrahedron Letters · 1978 · 20 citations

Natural Sciences, Chemistry, Catalysis +7

Lewis acid-catalysed reactions of 2,2,2-trichloroethyl 6-diazopenicillanate and imines: rearrangements of spiro-6-aziridine- and spiro-6-oxirane-penicillanates. X-Ray crystal structures of (3S,6′S]-2,2,2-trichloroethyl 3-[4-nitrophenyl)-1-phenylspiro[aziridine-2,6′-penicillanate] and (3S,7aR)-2,2,2-trichloroethyl 2,3,5,7a-tetrahydro-7-methoxy-2,2-dimethyl-6-(4-nitrophenyl)-5-oxopyrrolo[2,1-b]thiazole-3-carboxylate

V. J. JEPHCOTE, D. I. JOHN, David Williams · Journal of the Chemical Society Perkin Transactions 1 · 1986 · 19 citations

Natural Sciences, Chemistry, Medicinal Chemistry +16