The acid-catalyzed cyclization of a pseudogeminally substituted acetyl group and a chloromethyl group of tri-bridged cyclophane 7 , followed by reduction of the carbonyl group afforded (3,](1,2,3,5)cyclophane 3. One-step TosMIC coupling reaction of tetrabromide 12 and subsequent reduction of the car
Synthesis of 1,2- and 1,3-cyclic phospholipid conjugates of N1-(2-furanidyl)-N3-(2-hydroxyethyl)-5-fluorouracil
β Scribed by Zhang Cheng-Xiang; Zhang Zhong-Biao; Chen Huan-Ming; Tang Chu-Chi; Chen Ru-Yu
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 152 KB
- Volume
- 9
- Category
- Article
- ISSN
- 1042-7163
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β¦ Synopsis
The conjugates of cyclic glycerolphospholipids and N 1 -(2-furanidyl)-N 3 -(2-hydroxyethyl)-5fluorouracil have been synthesized by a one-pot procedure. The hexaethylphosphorus triamide activated by a catalytic amount of iodine was used as the phosphorylating and cyclizing reagent.
π SIMILAR VOLUMES
With sodium borohydride in tetrahydrofuran/ethanol (5 : 1). the product ( I ) gives a 75 yield of a compound, m.p. 233 "C, that is identical with the recently prepared 2-(diphenylmethyl)imidaz0le[~1. When product ( I ) is boiled for 2 h in tetrahydrofuran/water (2: I ) it affords 2-(hydroxy-dipheny