Tetrahedron report number 221

Synthetic polyhydroxylated steroidal lactones are found to be highly effective plant growth promoting substances.

Plant growth promoting brassinosteroids

The chemical characteristic and distribution of brassinosteroids in plants.

Brassinosteroid: a biotechnological target for enhancing crop yield and stress tolerance

Biochemistry and Physiology oj Plant Hormones is intended primarily as a textbook or major reference for a one-term intermediate-level or advanced course dealing with hormonal regulation of growth and development of seed plants for students majoring in biology, botany, and applied botany fields such as agronomy, forestry, and horticulture. Additionally, it should be useful to others who wish to become familiar with the topic in relation to their principal student or professional interests in related fields. It is assumed that readers will have a background in fundamental biology, plant physiology, and biochemistry. The dominant objective of Biochemistry and Physiology oj Plant Hor mones is to summarize, in a reasonably balanced and comprehensive way, the current state of our fundamental knowledge regarding the major kinds of hormones and the phytochrome pigment system. Written primarily for students rather than researchers, the book is purposely brief. Biochemical aspects have been given priority intentionally, somewhat at the expense of physiological considerations. There are extensive citations of the literature-both old and recent-but, it is hoped, not so much documentation as to make the book difficult to read. The specific choices of publications to cite and illustrations to present were made for different reasons, often to illustrate historical develop ment, sometimes to illustrate ideas that later proved invalid, occasionally to exemplify conflicting hypotheses, and most often to illustrate the current state of our knowledge about hormonal phenomena."

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Biochemistry and Physiology of Plant Hormones

Structure-activity relationship of brassinosteroids

Microanalysis of brassinolide and its analogues by gas chromatography and gas chromatography-mass spectrometry

Synthesis of (24R)-28-homobrassinolide analogues and structure-activity relationships of brassinosteroids in the rice-lamina inclination test

Analysis of natural brassinosteroids by gas chromatography and gas chromatography—mass spectrometry

Oxetin (1a), a unique antibiotic having an oxetane ring, and its three stereoisomers (1b, 1c, and 1d) were synthesized from the known aldehyde (6) by utilizing a highly regio- and stereoselective epoxide ring-opening reaction. The biological activities of these oxetin stereoisomers were compared.

Suguru Takatsuto

Papers

Structure-activity relationship of brassinosteroids

Microanalysis of brassinolide and its analogues by gas chromatography and gas chromatography-mass spectrometry

Synthesis of (24R)-28-homobrassinolide analogues and structure-activity relationships of brassinosteroids in the rice-lamina inclination test

Analysis of natural brassinosteroids by gas chromatography and gas chromatography—mass spectrometry

Synthesis of a New Amino Acid-Antibiotic, Oxetin and Its Three Stereoisomers