Biomedical subjects
J R Hanson
Publications and source records attributed to J R Hanson.
The microbiological transformation of diterpenoids.
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Interpretation of results with the 8-azaguanine resistance system in Salmonella typhimurium: no evidence for direct acting mutagenesis by 15-oxosteviol, a possible metabolite of steviol.
15-Oxosteviol, postulated to be the mutagenic metabolite of steviol, was observed to be non-mutagenic in preliminary experiments using a number of different systems. Repetition of the original experiment in Salmonella TM677 failed to show any significant induction of 8-azaguanine resistant mutants by 15-oxosteviol even when the number of bacteria tested was greatly increased. Examination of the earlier positive result showed that it could not be justified from the data and revealed a commonly applied way of mishandling data obtained with the TM677 system.
Preparation of androsta-2,5-dien-4-ones.
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Studies in terpenoid biosynthesis. Part 19. Formation of pimara-8(9),15-diene by Trichothecium roseum.
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Studies in terpenoid biosynthesis. Part XIV. Formation of the sesquiterpene trichodiene.
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Studies in terpenoid biosynthesis. Part XV. Biosynthesis of the sesquiterpenoid illudin M.
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Studies in terpenoid biosynthesis. Part XVI. Formation of the sesquiterpenoid trichothecin.
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Studies in terpenoid biosynthesis. Part 18. Biosynthesis of culmorin.
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Microbiological hydroxylation of 3beta, 7beta-dihydroxykaurenolide.
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Epoxidation of 3alpha, 5-cyclo-5alpha-androst-6-en-17-one.
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A rearrangement of 4beta,5beta-epoxy-6alpha-hydroxyandrostan-17beta-yl acetate.
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The 13C nuclear magnetic resonance spectra of some gibberellins.
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