Brassinolide and its analogs. Part IV. Synthesis of brassinolide analogs with or without the steroidal side chain.

Kondo, Michitada; Mori, Kenji

doi:10.1271/bbb1961.47.97

Cited by 16 publications

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TheBaeyer–VilligerOxidation of Ketones and Aldehydes

1993

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The oxidative conversion of alicyclic ketones into lactones with permonosulfuric acid was discovered by Baeyer and Villiger in 1899, and in their honor the general process by which ketones are converted into esters or lactones is now known as the Baeyer–Villiger reaction. The literature on this synthetically useful process has been reviewed comprehensively through 1953 in Volume 9 of Organic Reactions , and less comprehensive reviews of the reaction have appeared since then. More recent investigations have led to the development of new synthetic reagents, to improvements in experimental reaction conditions, and to a better understanding of regiochemical and stereochemical aspects of the reaction. Baeyer–Villiger reactions now often can be carried out with functional group chemoselectivity and regiochemical control. Although the recent removal from commerce of 90% hydrogen peroxide and reagents based upon this oxidant are a setback to Baeyer–Villiger reaction methodology, alternative reagents, catalysts, and methods described in this review are available to fill the gaps. The definition of the Baeyer–Villiger reaction is somewhat fuzzy, and can be considered to include both ketones and aldehydes. In addition to the traditional use of organic and inorganic peracids as oxidants, examples of oxygen insertion reactions using hydrogen peroxide, alkyl peroxides, and several metal ion oxidants are considered to fall within the scope of this chapter and are included in the tabular survey.

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TheBaeyer–VilligerOxidation of Ketones and Aldehydes

1993

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Synthesis of Phytohormones, Phytoalexins and Other Biofunctional Molecules of Plant Origin

Mori

2010

Chemical Synthesis of Hormones, Pheromones and Other Bioregulators

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Since ancient times, mankind has utilized higher plants as the sources of foods, clothes, houses, medicinals and so on, which are indispensable for mankind's existence on this planet. Chemists became interested in clarifying the physiology and ecology of higher plants. Studies on natural products of plant origin have prospered for these two centuries, and the field is now called phytochemistry. Chemical studies on physiology of higher plants clarified the roles of various phytohormones in higher plants. Semiochemicals and phytoalexins are important biofunctional molecules in plant ecology. In this chapter we will learn the synthetic chemistry of biofunctional molecules related to higher plants.

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