Barry, Conor S. published the artcileStereoselective Synthesis of the Tetrahydropyran Core of Polycavernoside A, SDS of cas: 99438-28-5, the publication is Organic Letters (2005), 7(13), 2683-2686, database is CAplus and MEDLINE.
A concise and stereoselective synthesis of the tetra-substituted tetrahydropyran core of polycavernoside A was achieved in 55% overall yield from 3-benzyloxypropanal. A stereoselective allyl transfer reaction was used in the synthesis of enol ether I followed by a TFA-mediated cyclization to create the three new asym. centers in the tetrahydropyran with complete stereocontrol in a single-pot process.
Organic Letters published new progress about 99438-28-5. 99438-28-5 belongs to ethers-buliding-blocks, auxiliary class Chiral,Aliphatic cyclic hydrocarbon, name is (+)-B-Methoxydiisopinocampheylborane, and the molecular formula is C21H37BO, SDS of cas: 99438-28-5.
Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem