White, James D. published the artcileA concise synthesis of the cytotoxic depsipeptide arenastatin A, Name: (+)-B-Methoxydiisopinocampheylborane, the publication is Tetrahedron Letters (1998), 39(48), 8779-8782, database is CAplus.
Arenastatin A (I) (cryptophycin 24) was synthesized by convergence of hydroxy ester II with amino acid derivative III. Two independent and highly efficient routes to II are disclosed.
Tetrahedron 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 C4Br2N2O4S, Name: (+)-B-Methoxydiisopinocampheylborane.
Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem