Results 191 to 200 of about 6,513 (208)

Novel construction of the brassinolide side chain

Tetrahedron Letters, 2003
Abstract A stereoselective synthesis of brassinolide, which involves construction of the side chain by a highly stereoselective aldol reaction between 20 S -6β-methoxy-3α,5- cyclo -5α-pregnane-20-carboxaldehyde 2 and ketone 3 or 4 catalyzed by l -proline, is described.
Lizeng Peng, Huawei Liu, Tao Zhang, Fengzhi Zhang, Tiansheng Mei, Yi Li, Yulin Li   +6 more
openaire   +1 more source

ChemInform Abstract: A NOVEL SYNTHESIS OF BRASSINOLIDE

Chemischer Informationsdienst, 1984
AbstractAus dem Pregnanaldehyd (I) erhält man mit dem Li‐Derivat (II) das Addukt (III), das zu (IV) hydriert und weiter zu (V) reduziert wird.
J. R. DONAUBAUER, A. M. GREAVES, T. C. MCMORRIS   +2 more
openaire   +1 more source

ChemInform Abstract: BRASSINOLIDE AND ITS ANALOGS. PART I. SYNTHESIS OF (22S,23S)‐HOMOBRASSINOLIDE E AND BRASSINOLIDE FROM STIGMASTEROL

Chemischer Informationsdienst, 1982
Abstract(22S, 23S)‐Homobrassinolid (VIb) wird aus Stigmasteryltosylat, dessen (22S, 23S)‐Konfiguration bekannt ist, über die Stufen (I) bis (Vb), (VIa) dargestellt.
K. MORI, M. SAKAKIBARA, Y. ICHIKAWA, H. UEDA, K. OKADA, T. UMEMURA, G. YABUTA, S. KUWAHARA, M. KONDO, M. MINOBE, A. SOGABE   +10 more
openaire   +1 more source

Brassinolide improves embryogenic tissue initiation in conifers and rice

Plant Cell Reports, 2003
Somatic embryogenesis (SE), the most promising technology for the large-scale production of high-value coniferous trees from advanced breeding and genetic engineering programs, is expected to play an important role in increasing productivity, sustainability, and the uniformity of future U.S. forests.
G S, Pullman, Y, Zhang, B H, Phan
openaire   +2 more sources

ChemInform Abstract: A Formal Synthesis of Brassinolide.

ChemInform, 1997
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
T. SCHMITTBERGER, D. UGUEN
openaire   +1 more source

Brassinolide plays in the hypoxia band

Trends in Plant Science, 2001
The evolution of vascular plants took place in an oxygen-enriched environment, thus, not surprisingly, oxygen is involved in hundreds of metabolic reactions, including the biosynthesis and metabolism of plant growth regulators (e.g. gibberellins, ethylene and brassinolides), as well as in multiple metabolic pathways (i.e.
openaire   +1 more source

Castasterone and brassinolide in Raphanus sativus seeds

Phytochemistry, 1991
Abstract Castasterone and brassinolide have been identified from seeds of Raphanus sativus by GC-MS analysis. Comparative quantification experiments with seeds and germinated seeds carried out by GC-SIM indicated a remarkable difference in the ratio of brassinosteroids in favour of the formation of brassinolide during germination.
Jürgen Schmidt, Takao Yokota, Günter Adam, Nobutaka Takahashi   +3 more
openaire   +1 more source

ChemInform Abstract: Stereocontrolled Synthesis of the Brassinolide Side‐Chain: Formal Synthesis of Brassinolide.

ChemInform, 1988
T. KAMETANI, M. KIGAWA, M. TSUBUKI, T. HONDA   +3 more
openaire   +1 more source

A novel synthesis of brassinolide

The Journal of Organic Chemistry, 1984
John R. Donaubauer, Austin W. Greaves, Trevor C. McMorris   +2 more
openaire   +1 more source

Synthesis of Brassinolide

1991
T. C. McMorris, J. R. Donaubauer, M. H. Silveira, T. F. Molinski   +3 more
openaire   +1 more source