Denmark, Scott E. published the artcileTotal synthesis of (+)-papulacandin D, Name: (+)-B-Methoxydiisopinocampheylborane, the publication is Tetrahedron (2010), 66(26), 4745-4759, database is CAplus and MEDLINE.
A total synthesis of (+)-papulacandin D (I) was achieved in 31 steps, in a 9.2% overall yield from com. available materials. The synthetic strategy divided the mol. into two nearly equal sized subunits, i.e. the spirocyclic C-arylglycopyranoside and the polyunsaturated fatty acid side-chain. The C-arylglycopyranoside was prepared in 11 steps in a 30% overall yield from triacetoxyglucal. The fatty acid side-chain was also prepared in 11 steps in a 30% overall yield from geraniol. The key strategic transformations in the synthesis were a palladium-catalyzed organosilanolate-based cross-coupling reaction of a dimethylglucal-silanol with an electron-rich and sterically hindered aromatic iodide and a Lewis-base catalyzed enantioselective allylation reaction of a dienal and allyltrichlorosilane. A critical element in the successful execution of the synthesis was the development of a suitable protecting group strategy that satisfied a number of stringent criteria.
Tetrahedron 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, Name: (+)-B-Methoxydiisopinocampheylborane.
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https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem