Abstract:
:Epothilones A and B, two compounds that have been recently isolated from myxobacterium Sorangium cellulosum strain 90, have generated intense interest among chemists, biologists and clinicians owing to the structural complexity, unusual mechanism of interaction with microtubules and anticancer potential of these molecules. Like taxol, they exhibit cytotoxicity against tumour cells by inducing microtubule assembly and stabilization, even in taxol-resistant cell lines. Following the structural elucidation of these molecules by X-ray crystallography in 1996, several syntheses of epothilones A and B have been reported, indicative of the potential importance of these molecules in the cancer field. Here we report the first solid-phase synthesis of epothilone A, the total synthesis of epothilone B, and the generation of a small epothilone library. The solid-phase synthesis applied here to epothilone A could open up new possibilities in natural-product synthesis and, together with solution-phase synthesis of other epothilones, paves the way for the generation of large combinatorial libraries of these important molecules for biological screening.
journal_name
Naturejournal_title
Natureauthors
Nicolaou KC,Winssinger N,Pastor J,Ninkovic S,Sarabia F,He Y,Vourloumis D,Yang Z,Li T,Giannakakou P,Hamel Edoi
10.1038/387268a0subject
Has Abstractpub_date
1997-05-15 00:00:00pages
268-72issue
6630eissn
0028-0836issn
1476-4687journal_volume
387pub_type
杂志文章相关文献
NATURE文献大全abstract::Different classes of retroviruses have been shown to induce immunodeficiency diseases in various animal species. These animal models may provide an insight into our understanding of AIDS but, with the exception of one strain of feline leukaemia virus, the determinants of pathogenicity have not yet been mapped to these...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/338505a0
更新日期:1989-04-06 00:00:00
abstract::It is of fundamental importance to establish whether there is a limit to how thin a superconducting wire can be, while retaining its superconducting character--and if there is a limit, to determine what sets it. This issue may also be of practical importance in defining the limit to miniaturization of superconducting ...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/35010060
更新日期:2000-04-27 00:00:00
abstract::Numerous studies have suggested that biodiversity reduces variability in ecosystem productivity through compensatory effects; that is, a species increases in its abundance in response to the reduction of another in a fluctuating environment. But this view has been challenged on several grounds. Because most studies ha...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/nature02850
更新日期:2004-09-09 00:00:00
abstract::One goal of regenerative medicine, to use stem cells to replace cells lost by injury or disease, depends on producing an excess of the relevant cell for study or transplantation. To this end, the stepwise differentiation of stem cells into specialized derivatives has been successful for some cell types, but a major pr...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/nature11463
更新日期:2012-11-29 00:00:00
abstract::The hydroxyl radical (OH) is a key oxidant involved in the removal of air pollutants and greenhouse gases from the atmosphere. The ratio of Northern Hemispheric to Southern Hemispheric (NH/SH) OH concentration is important for our understanding of emission estimates of atmospheric species such as nitrogen oxides and m...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/nature13721
更新日期:2014-09-11 00:00:00
abstract::Only a very small fraction of long noncoding RNAs (lncRNAs) are well characterized. The evolutionary history of lncRNAs can provide insights into their functionality, but the absence of lncRNA annotations in non-model organisms has precluded comparative analyses. Here we present a large-scale evolutionary study of lnc...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/nature12943
更新日期:2014-01-30 00:00:00
abstract::Sudden, large-scale and diffuse human migration can amplify localized outbreaks of disease into widespread epidemics1-4. Rapid and accurate tracking of aggregate population flows may therefore be epidemiologically informative. Here we use 11,478,484 counts of mobile phone data from individuals leaving or transiting th...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/s41586-020-2284-y
更新日期:2020-06-01 00:00:00
abstract::Polycomb and trithorax group (PcG and trxG) proteins maintain silent and active transcriptional states, respectively, throughout development. In Drosophila, PcG and trxG proteins associate with DNA regions named Polycomb and trithorax response elements (PRE and TRE), but the mechanisms of recruitment are unknown. We p...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/nature03386
更新日期:2005-03-24 00:00:00
abstract::The Rho-family GTPase, Cdc42, can regulate the actin cytoskeleton through activation of Wiskott-Aldrich syndrome protein (WASP) family members. Activation relieves an autoinhibitory contact between the GTPase-binding domain and the carboxy-terminal region of WASP proteins. Here we report the autoinhibited structure of...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/35004513
更新日期:2000-03-09 00:00:00
abstract::Galaxies congregate in clusters and along filaments, and are missing from large regions referred to as voids. These structures are seen in maps derived from spectroscopic surveys that reveal networks of structure that are interconnected with no clear boundaries. Extended regions with a high concentration of galaxies a...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/nature13674
更新日期:2014-09-04 00:00:00
abstract::Metastasis is a major cause of death in cancer patients and involves a multistep process including detachment of cancer cells from a primary cancer, invasion of surrounding tissue, spread through circulation, re-invasion and proliferation in distant organs. KiSS-1 is a human metastasis suppressor gene, that suppresses...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/35079135
更新日期:2001-05-31 00:00:00
abstract::The cranial morphology of the earliest known hominins in the genus Australopithecus remains unclear. The oldest species in this genus (Australopithecus anamensis, specimens of which have been dated to 4.2-3.9 million years ago) is known primarily from jaws and teeth, whereas younger species (dated to 3.5-2.0 million y...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/s41586-019-1513-8
更新日期:2019-09-01 00:00:00
abstract::Vaccines rarely provide full protection from disease. Nevertheless, partially effective (imperfect) vaccines may be used to protect both individuals and whole populations. We studied the potential impact of different types of imperfect vaccines on the evolution of pathogen virulence (induced host mortality) and the co...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/414751a
更新日期:2001-12-13 00:00:00
abstract::It has been established that many eukaryotic mRNAs contain poly(adenylic acid) tracts at their 3'-termini. The polyadenylation of mRNA occurs post-transcriptionally in the nucleus as a rapid, initial addition of 100-200 adenylate residues to the pre-mRNA (ref. 1). Subsequently, a slower chain extension (6-8 bases) of ...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/267178a0
更新日期:1977-05-12 00:00:00
abstract::The fundamental properties of neutron stars provide a direct test of the equation of state of cold nuclear matter, a relationship between pressure and density that is determined by the physics of the strong interactions between the particles that constitute the star. The most straightforward method of determining thes...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/nature01159
更新日期:2002-11-07 00:00:00
abstract::The clinical development of an inhibitor of cellular proteasome function suggests that compounds targeting other components of the ubiquitin-proteasome system might prove useful for the treatment of human malignancies. NEDD8-activating enzyme (NAE) is an essential component of the NEDD8 conjugation pathway that contro...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/nature07884
更新日期:2009-04-09 00:00:00
abstract::The direct functionalization of unactivated sp(3) C-H bonds is still one of the most challenging problems facing synthetic organic chemists. The appeal of such transformations derives from their capacity to facilitate the construction of complex organic molecules via the coupling of simple and otherwise inert building...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/nature14255
更新日期:2015-03-05 00:00:00
abstract::Embryonal tumours with multilayered rosettes (ETMRs) are aggressive paediatric embryonal brain tumours with a universally poor prognosis1. Here we collected 193 primary ETMRs and 23 matched relapse samples to investigate the genomic landscape of this distinct tumour type. We found that patients with tumours in which t...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/s41586-019-1815-x
更新日期:2019-12-01 00:00:00
abstract::Alzheimer's disease (AD) is characterized by deposition of amyloid-β (Aβ) plaques and neurofibrillary tangles in the brain, accompanied by synaptic dysfunction and neurodegeneration. Antibody-based immunotherapy against Aβ to trigger its clearance or mitigate its neurotoxicity has so far been unsuccessful. Here we rep...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/nature19323
更新日期:2016-09-01 00:00:00
abstract::Corticosteroids as well as non-steroid anti-inflammatory drugs inhibit the prostaglandin-mediated vasodilatation accompanying lipolysis in subcutaneous fat. Whereas the non-steroids produce their effect by inhibition of prostaglandin synthesis, however, corticosteroids inhibit their release. This mechanism may be the ...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/254308a0
更新日期:1975-03-27 00:00:00
abstract::Because their molecular signatures are often prominent in extracts of sediments, bacteria are thought to be important contributors to petroleum source beds. It has been shown recently, however, that abundances of biomarkers do not always reflect relative contributions to sedimentary organic carbon (Corg). The contrib...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/369224a0
更新日期:1994-05-19 00:00:00
abstract::Vertebrate erythroid cells contain a tissue-specific transcription factor referred to as Eryf 1 (ref. 1), GF-1 (ref. 2) or NF-E1 (ref. 3), for which binding sites are widely distributed in the promoters and enhancers of the globin gene family, and of other erythroid-specific genes. Aberrant binding of the human factor...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/343092a0
更新日期:1990-01-04 00:00:00
abstract::Major depressive disorder (MDD), one of the most frequently encountered forms of mental illness and a leading cause of disability worldwide, poses a major challenge to genetic analysis. To date, no robustly replicated genetic loci have been identified, despite analysis of more than 9,000 cases. Here, using low-coverag...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/nature14659
更新日期:2015-07-30 00:00:00
abstract::In Fig. 1b of this Article, a U was inadvertently inserted after G15 in the D loop. The original Article has not been corrected. ...
journal_title:Nature
pub_type: 杂志文章,已发布勘误
doi:10.1038/s41586-018-0760-4
更新日期:2018-12-01 00:00:00
abstract::Lipid-bilayer membranes supported on solid substrates are widely used as cell-surface models that connect biological and artificial materials. They can be placed either directly on solids or on ultrathin polymer supports that mimic the generic role of the extracellular matrix. The tools of modern genetic engineering a...
journal_title:Nature
pub_type: 杂志文章,评审
doi:10.1038/nature04164
更新日期:2005-09-29 00:00:00
abstract::To ensure cell survival, it is essential that the ubiquitous pro-apoptotic machinery is kept quiescent. As death is irreversible, cells must continually integrate developmental information with regulatory inputs to control the switch between repressing and activating apoptosis. Inappropriate activation or suppression ...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/nature01920
更新日期:2003-08-28 00:00:00
abstract::The formation of precise connections between retina and lateral geniculate nucleus (LGN) involves the activity-dependent elimination of some synapses, with strengthening and retention of others. Here we show that the major histocompatibility complex (MHC) class I molecule H2-D(b) is necessary and sufficient for synaps...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/nature13154
更新日期:2014-05-08 00:00:00
abstract::In addition to acting as template for protein synthesis, messenger RNA (mRNA) often contains sensory sequence elements that regulate this process. Here we report a new mechanism that limits the number of complete protein molecules that can be synthesized from a single mRNA molecule of the human AMD1 gene encoding aden...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/nature25174
更新日期:2018-01-18 00:00:00
abstract::Post-transcriptional gene regulation frequently occurs through elements in mRNA 3' untranslated regions (UTRs). Although crucial roles for 3'UTR-mediated gene regulation have been found in Caenorhabditis elegans, most C. elegans genes have lacked annotated 3'UTRs. Here we describe a high-throughput method for reliable...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/nature09616
更新日期:2011-01-06 00:00:00
abstract::Early-life dietary transitions reflect fundamental aspects of primate evolution and are important determinants of health in contemporary human populations. Weaning is critical to developmental and reproductive rates; early weaning can have detrimental health effects but enables shorter inter-birth intervals, which inf...
journal_title:Nature
pub_type: 历史文章,杂志文章
doi:10.1038/nature12169
更新日期:2013-06-13 00:00:00