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Joanne Smallheer

Hoffmann-La Roche

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Publication

Featured researches published by Joanne Smallheer.

Zeitschrift für Naturforschung B | 1977

Mikrobielle Produkte, I NMR-Spektren von Nocardamin und Massenspektrum des Tri-O-methyl-nocardamins / Microbiological Products, I NMR Spectra of Nocardamine and Mass Spectra of Tri-O-methyl-nocardamine

Hubert Maehr; Wolfgang. Benz; Joanne Smallheer; Thomas H. Williams

Nocardamine was isolated from an unidentified Streptomyces, species X-14568, and its 1H NMR and 13C NMR spectra are assigned in detail. Reaction with iodomethane and silver oxide converts nocardamine to the tri-O-methyl ether which is a suitable derivative for electron-impact mass spectrometry. Fragmentation mechanisms of tri-O-methylnocardamine are discussed.

The Journal of Antibiotics | 1986

Microbial products. VIII: Azinothricin, a novel hexadepsipeptide antibiotic

Hubert Maehr; Chao-Min Liu; Norberto J. Palleroni; Joanne Smallheer; Louis J. Todaro; Thomas H. Williams; John F. Blount

Journal of Organic Chemistry | 1994

Total Synthesis of (.+-.)-Dragmacidin: A Cytotoxic Bis(indole)alkaloid of Marine Origin

Biao Jiang; Joanne Smallheer; Carol Amaral-Ly; Mark A. Wuonola

The Journal of Antibiotics | 1982

Microbial products. VI Five novel metabolites related to benz[a]anthracene from an unidentified actinomycete designated X-14881.

Hubert Maehr; Chao-Min Liu; Mark Liu; Agostino Perrotta; Joanne Smallheer; Thomas H. Williams; John F. Blount

Journal of Organic Chemistry | 1988

Synthetic (S)-5-(benzoyloxy)-6-oxohexanoic acid ethyl ester and [S,S-(E)]-3-(hydroxymethyl)oxiranebutanoic acid methyl ester, important synthons for leukotrienes B4 and A4, from D-arabinose

Hubert Maehr; Agostino Perrotta; Joanne Smallheer

Journal of the American Chemical Society | 1985

Total syntheses of rivularins D1 and D3

Hubert Maehr; Joanne Smallheer

The Journal of Antibiotics | 1980

Microbial products. IV. X-14847, a new aminoglycoside from Micromonospora echinospora.

Hubert Maehr; Chao-Min Liu; Theron Hermann; Barbara La T. Prosser; Joanne Smallheer; Norberto J. Palleroni

Journal of Organic Chemistry | 1984

Rivularins. Preliminary synthetic studies

Hubert Maehr; Joanne Smallheer

ChemInform | 1981

A new approach to 4-substituted indoles

Hubert Maehr; Joanne Smallheer

Journal of Organic Chemistry | 1981

Microbial products. 5. Absolute configuration of aminoglycoside X-14847

Hubert Maehr; Joanne Smallheer; John F. Blount

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Hubert Maehr

Rutgers University

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John F. Blount

Princeton University

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Thomas H. Williams

Hoffmann-La Roche

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Chao-Min Liu

Hoffmann-La Roche

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Louis J. Todaro

Hoffmann-La Roche

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Norberto J. Palleroni

Rutgers University

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Agostino Perrotta

Hoffmann-La Roche

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Gino J. Sasso

Hoffmann-La Roche

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Hilda V. Cuellar

Hoffmann-La Roche

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Julius Berger

Hoffmann-La Roche

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