A New Synthetic Method for the Preparation of α,β‐Didehydroamino Acid Derivatives by Means of a Wittig‐Type Reaction. Syntheses of (2S,4S)‐ and (2R,4R)‐4‐Hydroxyprolines.

Kimura, Rumi; Nagano, Tanemasa; Kinoshita, Hideki

doi:10.1002/chin.200314187

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2018

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“…During our screening program, the EtOAc extract of this strain exhibited antimicrobial activity against a Gram negative (Escherichia coli -ATCC25922) bacteria strain, and a fungus strain (Candida albicans -ATCC1023). Herein, we describe the isolation and structural determination of nine compounds (1)(2)(3)(4)(5)(6)(7)(8)(9) from the extract of the culture broth of Micromonospora sp. (strain G068).…”

Section: Introductionmentioning

confidence: 99%

Secondary Metabolites Produced by Marine Bacterirum Micromonospora Sp. (G068)

Tuan¹

2018

JST

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Nine compounds (1-9) were isolated and characterized from the culture broth of the marine bacteria Micromonospora sp. (strain G068), which was isolated from sediment collected at Co To -Quang Ninh. Their structures were determined by spectroscopic analysis including MS, 1D NMR and 2D NMR, as well as by comparison with reported data in the literature. All compounds were evaluated for their antimicrobial activities against a panel of clinically significant microorganisms. Compounds 1, 6, and 9 selectively inhibited Escherichia coli with MIC values of 128, 128 and 64 μg/mL, respectively.

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Section: Introductionmentioning

confidence: 99%

Secondary Metabolites Produced by Marine Bacterirum Micromonospora Sp. (G068)

Tuan¹

2018

JST

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“…Kinoshita reported two methods using N-Cbz-tosyl glycinates and nitro compounds 3 or aldehydes 4 in an alkylation/nitrite elimination-cascade or Wittig-type reaction, respectively (Scheme 1A). These approaches allow access to a variety of substituted dhAAs but are limited in the protective groups on the tosyl glycine derivative and the accessibility of their respective coupling partners.…”

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confidence: 99%