Functionalized pyrrolotriazine 1b is a key
heterocyclic
building block in the synthesis of BMS-690514, a potent anticancer
agent. Described herein are our development activities that led to
the efficient preparation of 1b on a large scale. The
key transformations include a selective C-alkylation of an oxalacetate
salt with a hydrazonyl bromide to form a 2-hydrazonoethyl-3-oxosuccinate,
followed by cyclodehydration to an aminopyrrole. Subsequent deprotection
and condensation with formamidine afforded the pyrrolotriazine scaffold.
Further elaboration of this core provided the desired pyrrolotriazinyl
amine.
Four synthetic strategies were evaluated towards the preparation of (-)-(3R,4R)-1-benzyl-4-(benzylamino)piperidin-3-ol (1), which was constructed with control over the relative and absolute stereochemistry of the 4,3-amino alcohol moiety. The first strategy employed a novel Rh(I) catalyzed asymmetric hydrogenation, while two other strategies exploited the existing stereochemistry in 2-deoxy-D-ribose, and the fourth explored both biocatalytic and classical resolution techniques as a means to impart enantioenrichment to racemic intermediates en route to targeted structure (-)-1.
Our goal was to identify strategies aimed at increasing Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) enrollment and participation rates. The WIC program provides many health benefits for pregnant women, mothers, and children. WIC offers nutrition education, formula, fruits and vegetables, and other food to pregnant and postpartum women and their children until they reach the age of five. Despite the availability of this program nationwide, enrollment and participation rates remain low across the country. Several states have tried various interventions to combat this deficiency of engagement with the goal of increasing WIC enrollment and participation. We conducted a scoping review to identify articles based on pre-specified inclusion and exclusion criteria. Two reviewers independently identified and screened articles. Subsequently, three reviewers independently extracted study details and outcomes related to WIC enrollment and participation rate changes. We included 14 studies reporting on 12 interventions from 3945 citations reviewed. Seven of these were published papers, while the others were final reports of USDA WIC Special Grant Projects. All the observed interventions had some success increasing WIC participation. Virtual interventions demonstrated the most success based on preliminary evidence. Successful interventions showed percentage gains in enrollment close to 8% and changes in participation over 9%. Overall, the literature surrounding WIC enrollment interventions reveal a mixed impact on improving participation. Many successful interventions involve an online or virtual engagement component which can provide educational resources on WIC benefits, nutrition, and living a healthy lifestyle.
Supplementary Information
The online version contains supplementary material available at 10.1007/s10900-022-01131-2.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.