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Chemistry World May 29, 2013 Paul Docherty |
Pactamycin A member of a 'rival' field stating that a molecule is 'inaccessible by synthetic organic chemistry' is like a red rag to the proverbial bull. This challenge surrounds analogs of pactamycin, a complex cyclopentane-based target with an exceptionally potent biological profile. |
Chemistry World July 1, 2012 Paul Docherty |
Vincorine Cage-structured natural products are some of the most appealing (if perhaps not appetising) targets for organic chemists -- perhaps due to their obvious intricacy of form, but also because of their structural rigidity. |
Chemistry World February 2011 Paul Docherty |
Column: Totally Synthetic Although most of the natural products I've discussed have had biological activity at the core of the rationale for their synthesis, most organic chemists will admit that an unusual chemical structure is by far the stronger draw. |
Chemistry World June 2010 Paul Docherty |
Column: Totally Synthetic Although its chemistry is mature and varied, my use of silicon reagents in my synthetic forays has been limited to a somewhat clumsy use of hydroxyl protecting groups. |
Chemistry World September 20, 2007 Lewis Brindley |
New Catalyst Rings the Changes Organic chemists in the US have developed a method to control the stereochemistry of a useful intramolecular Diels-Alder reaction. |
Chemistry World February 2012 Paul Docherty |
Column: Totally Synthetic Medium rings are a beguiling feature found in a host of natural products, owing to their behavioral oddities. |
Chemistry World March 2011 Paul Docherty |
Column: Totally Synthetic Discovered independently by two chemists in the 1870s, it's remarkable that 140 years later, science is still tweaking and improving the aldol reaction. |
Chemistry World July 2009 Paul Docherty |
Column: Totally Synthetic When it comes to making large natural products, different researchers will often propose identical 'end-game' strategies to complete the target. |
Chemistry World April 2010 Paul Docherty |
Column: Totally Synthetic When one attempts the first synthesis of a natural product, the set of challenges are often unknown; which intermediates are either inaccessible or unstable, for instance. |
Chemistry World November 27, 2012 Paul Docherty |
Pentalenolactone A methyl ester One team that really gets the Pauson -- Khand reaction or the PKR and all its nuances is that led by Zhen Yang at Peking University in Beijing, China. They recently published a very neat synthesis of the intricate pentalenolactone |
Chemistry World June 1, 2012 Paul Docherty |
atrop-Abyssomicin C This member of the abyssomicin family is the only one to achieve bacteria-bashing prowess, and is also the only one to feature atropisomerism -- a relatively unusual form of stereoisomerism in naturally occurring species |
Chemistry World August 2009 Paul Docherty |
Column: Totally Synthetic Richmond Sarpong's research group at University of California, Berkeley, US, have taken quite an interest in lyconadin A, publishing an initial, racemic synthesis. |
Chemistry World October 31, 2012 Paul Docherty |
Epicoccin G The class of natural products known as 2,5-diketopiperazines is both broad and synthetically well-trodden. An important sub-class of these targets are found with a sprinkling of sulfur atoms, and seem particularly well-suited to pathogen-bashing. |
Chemistry World October 2008 Paul Docherty |
Column: Totally Synthetic Samuel Danishefsky of Columbia University (and the Sloan-Kettering Institute for cancer research), has focused on function rather than family. His many synthetic conquests are unified by their cancer-busting potential. |
Chemistry World June 2011 |
Column: Totally Synthetic I've never heard of the Polonovski-Potier reaction, the keystone of a remarkable synthesis by a team led by Tohru Fukuyama at the University of Tokyo, Japan. |
Chemistry World April 11, 2014 |
The sultan of synthesis Phil Baran is spurring organic chemists to rethink how they make complex compounds, as Mark Peplow discovers |
Chemistry World May 2010 Paul Docherty |
Column: Totally Synthetic In the case of englerin A, the synthetic strategies used by Dawei Ma's group at the Chinese Academy of Sciences, Shanghai, China, 1 and Antonio Echavarren's team at Rovira and Virgili University, Tarragona, Spain, 2 are extremely similar. |
Chemistry World January 2009 Paul Docherty |
Column: Totally Synthetic In the search for new biologically active natural products, sometimes a team isolating a new compound family will be lucky enough to find one active member. |
Chemistry World June 2008 Paul Docherty |
Column: Totally Synthetic Harvard University's David Evans is renowned for his prowess with an aldol reaction, and he has used the endlessly flexible transformation to make a diverse range of natural products. |
Chemistry World September 2008 Paul Docherty |
Column: Totally Synthetic The need to discover new antibiotics to treat resistant strains of bacteria is a well- documented and discussed challenge for chemists. |
Chemistry World January 29, 2014 |
Organic matter: Indoxamycins A, C and F In 2012, Erick Carreira's group in Zurich reported the total synthesis of indoxamycin B. 1 This 24-step organometallic tour de force resulted in a structural reassignment and set the bar rather high for future work on this family. |
Chemistry World November 2007 Dylan Stiles |
Column: Bench Monkey Total synthesis is not immune to the vagaries of fickle fashion. |
Chemistry World September 4, 2008 Fred Campbell |
Two catalysts better than one US researchers have cracked a long standing problem in chemical synthesis - the catalytic alpha-alkylation of aldehydes - by combining two catalysts in one pot. |
Chemistry World August 29, 2012 Paul Docherty |
Amphidinolide F We're plunging into the marine depths to find natural products with prodigious biological activity. The amphidinolide family comprises over 30 members, varying in architecture but (almost) all featuring a complex and highly decorated macrolactone ring at the core. |
Chemistry World January 2, 2013 Paul Docherty |
Flueggine A One of the most prolific sources of biologically active natural products is traditional medicines -- whose active components can be exceptionally potent. The Euphorbiaceae family of plants is a productive source of medicinal targets, including the Securinega alkaloids. |
Chemistry World October 2010 Paul Docherty |
Barekoxide and barekol Like most scientists, organic chemists can often obsess about a problem, endlessly pursuing the perfect yield or enantioselectivity, often leading to tears and broken glassware. |
Chemistry World November 2, 2015 |
Batzelladine B Of all the diverse substances that nature produces, the alkaloids -- small molecules containing basic nitrogen -- have had the greatest impact on human history and health. |
Chemistry World January 28, 2015 |
Rubriflordilactone A It's likely that organic chemists have been practicing retrosynthesis in one form or another for at least a century, and certainly for decades before E J Corey formalized the concept in the mid-1990s |
Chemistry World June 29, 2015 |
Organic odysseys Valuable compounds often come from the strangest places, and in such small concentrations that synthetic chemistry has to step up. |
Chemistry World September 2, 2013 Paul Docherty |
Steviol A discussion is presented on new ways to synthesize the diterpenoid steviol. |
Chemistry World July 30, 2014 |
Psylloborine A It's a somewhat surprising assertion that almost a fifth of natural products are thought to include a dimerization step somewhere in their biosynthesis. |
Chemistry World February 2009 Paul Docherty |
Column: Totally Synthetic The farming squeeze has renewed interest in compounds with anti-insect abilities, especially those known for their activity against specific pests. |
Chemistry World March 2009 Paul Docherty |
Column: Totally Synthetic Marine waters have produced some of the biggest celebrities of the natural product world - including the brevitoxins, saxitoxins and tetrodotoxins, 1 famous as much for the sheer human effort needed for their landmark syntheses as for their complexity and size. |
Chemistry World August 30, 2009 Phillip Broadwith |
C-H oxidation proves its worth US researchers are going against the grain of total synthesis and developing new approaches to complex molecules. |
Chemistry World March 8, 2006 Simon Hadlington |
New Route to C-Glycoside Creation Overcomes Earlier Drawbacks A one-pot process for creating C-glycosides could help prepare robust analogues of naturally occurring carbohydrates. The technique could ultimately be used to make carbohydrate derivatives more widely available for use in applications from drugs to biosensors. |
Chemistry World August 2008 Paul Docherty |
Column: Totally Synthetic Impersonating nature isn't easy, and biomimetic syntheses are remarkable in two senses. |
Chemistry World July 2008 Paul Docherty |
Column: Totally Synthetic The target is hypocrellin A, which couldn't look much less like last month's callipeltoside A. Even a casual glance reveals one intriguing feature of this target - the fact it exists in equilibrium with an isomer. |
Chemistry World April 2011 Paul Docherty |
Column: Totally Synthetic Reactions in the synthesis of guanacastepene N. Discovered in fungi growing on trees in the Guanacaste conservation area in Costa Rica, several syntheses of this family have appeared in the decade since their isolation. |
Chemistry World May 2012 Paul Docherty |
Column: Totally Synthetic Hopeanol and hopeahainol A |
Chemistry World April 2012 Paul Docherty |
Column: Totally Synthetic Detecting rearrangements still seems like an abstract ability for aspiring synthetic chemists. Erick Carreira's synthesis of indoxamycin B is a great case in point, employing two rearrangement reactions. |
Chemistry World August 2011 Paul Docherty |
Column: Totally Synthetic Yuanhuapin, a fabulously complex member of the daphnane diterpene orthoester class of natural products, bears an astonishing twelve contiguous stereogenic centres around its seven rings (look closely!). |
Chemistry World November 2009 Paul Docherty |
Column: Totally Synthetic The hunt for anticancer therapies is inextricably linked with natural products (such as taxol), and more specifically with macrolides. |
Chemistry World June 27, 2013 Paul Docherty |
Bolivianine The still-growing and insanely diverse class of terpene natural products is probably responsible for a considerable number of undergraduate headaches. |
Chemistry World September 2010 Paul Docherty |
Column: Totally Synthetic After a target has been synthesised, and the question of 'can we make this?' has been answered, perhaps the most important remaining question is 'how did nature make it?' |
Chemistry World October 2009 |
Column: In the pipeline Derek Lowe discusses the problem of leaning too heavily on favorite reactions |
Chemistry World August 2010 Paul Docherty |
Column: Totally Synthetic The total synthesis of macrolide targets is now a relatively mature field. Any synthesis that bucks these trends grabs attention, with a recent publication of dictyosphaeric acid A by Richard Taylor's team at the University of York, UK, a case in point. |
Chemistry World July 10, 2013 Karl Collins |
An 'Aye' for details Today, using methods developed by masters of their trade, the modern greats of total synthesis demonstrate that almost any molecule can be prepared given time and effort. |
Chemistry World August 2007 Derek Lowe |
Opinion: In the Pipeline Process chemists just don't get the credit they deserve. |
Chemistry World November 16, 2012 Yuandi Li |
(+)-Myrrhanol C made Spanish chemists have completed the stereospecific total synthesis of (+)-myrrhanol C. This compound is a natural triterpene isolated from mastic gum, a substance well known for its medicinal properties as well as use in various cuisines. |
Chemistry World December 2009 Paul Docherty |
Column: Totally Synthetic What turns a good synthesis into a great synthesis are the steps surrounding that motif, something that Darren Dixon from the University of Oxford, UK, exemplifies with this synthesis of Nakadomarin A. |