Exact(3)
A straightforward divergent preparation was achieved using key intermediates, which were designed as common precursors.
By design, the use of the same ketone-derived enamine and a set of related complementary heterocyclic azadiene [4+2] cycloaddition reactions permitted the late stage divergent preparation of a series of alternative heterocyclic derivatives not readily accessible by more conventional approaches.
Our interest in this Fe(III)/NaBH4-mediated reaction emerged not only from its use in accessing vinblastine but from the opportunity it presented for the late-stage, divergent preparation of otherwise inaccessible vinblastine analogues incorporating alternative C20′ functionality.
Similar(55)
A new divergent route for the preparation of -goniofufurone (1) and -crassalactone C (3) from d-xylose is also disclosed.
Diethanol amine and 2,2-bis methylene-2-bromoisobutyrate) propionyl chloride (BMBIBPC) were used as divergent reagents, respectively, before preparations of the second and the third generations.
These differences might be due to the inherent difficulty of matching developmental stages, differences in the single-cell cDNA synthesis and library preparation protocols or divergent genetic backgrounds.
36– 40 To prepare the series of target compounds we envisaged that a divergent synthesis would facilitate their rapid preparation.
Divergent advice is given on food preparation.
These divergent understandings and policy approaches towards the professional preparation of staff working with young children in education and care settings raise a number of questions regarding decisions about future professionalization policies.
Our divergent approach to these red-shifted dye scaffolds will enable the preparation of numerous novel fluorogenic probes with high biological utility.
In the current study we investigated the neuromuscular blockade of the venom of two sister species Micrurus mipartitus and Micrurus dissoleucus, which exhibit divergent ecological characteristics in Colombia, by using the chick biventer cervicis nerve-muscle preparation.
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