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UnknownAn Expeditious Total Synthesis of 5'-Deoxy-toyocamycin and 5'-Deoxysangivamycin.
In present paper, an expeditious total synthesis of naturally occurring 5'-deoxytoyocamycin and 5'-deoxysangivamycin was accomplished. Because of the introduction of a benzoyl group at N-6 of 4-amino-5-cyano-6-bromo-pyrrolo[2,3-d]pyrimidine, a Vorbrüggen glycosylation with 1,2,3-tri-O-acetyl-5-deoxy...
S-EPMC6413189 | biostudies-literature
UnknownP(v) intermediate-mediated E1cB elimination for the synthesis of glycals.
Glycals are highly versatile and useful building blocks in the chemistry of carbohydrate and natural products. However, the practical synthesis of glycals remains a long-standing and mostly unsolved problem in synthetic chemistry. Herein, we present an unprecedented approach to make a variety of gly...
S-EPMC9116453 | biostudies-literature
UnknownMetal-free synthesis of 1,N 6-ethenoadenines from N 6-propargyl-adenines via NIS mediated radical cascade reaction.
In the present paper, an efficient approach for the construction of 1,N 6-ethenoadenines from conveniently prepared N 6-propargyl-adenines is developed. This reaction merges N-iodosuccinimide radical initiation and aerobic aminooxygenation in dioxane. This ...
S-EPMC9075968 | biostudies-literature
UnknownTotal Synthesis of Mycalisine B.
The first total synthesis of the marine nucleoside Mycalisine B-a naturally occurring and structurally distinct 4,5-unsaturated 7-deazapurine nucleoside-has been accomplished in 10 linear steps with 27.5% overall yield from commercially available 1,2,3,5-tetra-O-acetyl-ribose and tetracyanoethylene....
S-EPMC6520845 | biostudies-literature
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