Search Results

You are looking at 1 - 10 of 27 items

  • Author: Hiromasa Kiyota x
Clear All Modify Search

Lipase-catalyzed resolution of 2-exo-7-syn-7-(1′-propynyl) norbornan-2-ol, a key synthetic intermediate for jasmonoids, was achieved using vinyl chloroacetate as an acyl donor.

Abstract

The C9′-C15′ fragment of enacyloxins, a series of antibiotics isolated from Frateuria sp. W-315, was synthesized from diethyl d-tartrate.

Abstract

The C16′-C23′ fragments of enacyloxins, a series of antibiotics isolated from Frateuria sp. W-315, were synthesized from d-arabinose.

Abstract

A mimic of a plausible biosynthetic intermediate of bisho­mononactic acid, one of the monomers of macrotetrolide antibiotics (polynactin), was synthesized as a thiol ester. FAB-MS analysis showed that fermentation of polynactin producing Streptomyces griseus with the compound, afforded the unnatural polynactins containing bishomononactic acid(s).

Abstract

The new radical scavenger 12T061C (C20H22O7) has been identified from a culture of Streptomyces species. Spectroscopic elucidation showed that this compound is a new Julichrome family compound. 12T061C shows a potent radical-scavenging activity with an ED50 of 18 μm that is similar to those of the known antioxidant compounds α-tocopherol (ED50 16 μm) and quercetin (ED50 3 μm).