منابع مشابه
An expedient route to substituted furans via olefin cross-metathesis.
The olefin cross-metathesis (CM) reaction is used extensively in organic chemistry and represents a powerful method for the selective synthesis of differentially substituted alkene products. Surprisingly, efforts to integrate this remarkable process into strategies for aromatic and heteroaromatic construction have not been reported. Such structures represent key elements of the majority of smal...
متن کاملBiosynthesis of fungal meroterpenoids.
Covering: up to September 2015. Meroterpenoids are hybrid natural products that partially originate from the terpenoid pathway. The meroterpenoids derived from fungi display quite diverse structures, with a wide range of biological properties. This review summarizes the molecular bases for their biosyntheses, which were recently elucidated with modern techniques, and also discusses the plausibl...
متن کاملAbsolutely expedient imitative behavior
This paper analyzes a model of learning by imitation, where besides the decision maker, there is a population of individuals facing the same decision problem. We analyze a property called Absolute Expediency, which requires that the decision maker’s expected payo¤ increases from one round to the next for every decision problem and every profile of realized actions taken by the population. We gi...
متن کاملCoibanoles, a new class of meroterpenoids produced by Pycnoporus sanguineus.
Three new terpenoids of mixed biosynthetic origin were isolated from the culture filtrate of the endophytic fungus Pycnoporus sanguineus. Their structures were determined by extensive spectroscopic analyses. We have named these tricyclic and tetracyclic metabolites 'coibanoles A-C' in reference to Coiba Island and Coiba National Park, Panamá, from which the plant and endophyte were collected. T...
متن کاملExpedient and Monotone Learning Rules
This paper considers learning rules for environments in which little prior and feedback information is available to the decision maker. Two properties of such learning rules are studied: absolute expediency and monotonicity. Both require that some aspect of the decision maker’s performance improves from the current period to the next. The paper provides some necessary, and some sufficient condi...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nature Catalysis
سال: 2020
ISSN: 2520-1158
DOI: 10.1038/s41929-020-0436-y