INTERMEDIATE FOR 2-ALKYNYLADENOSINE SYNTHESIS, PRODUCTION OF SAID INTERMEDIATE, PRODUCTION OF 2-ALKYNYLADENOSINE FROM SAID INTERMEDIATE, AND STABLE 2-ALKYNYLADENOSINE DERIVATIVE
The present invention relates to a novel compound represented by the following formula [I] which is useful as a synthetic intermediate of a 2-alkynyladenosine. The present invention also relates to a process for producing the compound and a process for producing a 2-alkynyladenosine [IV] by way of the compound. Further, the present invention relates to a 2-alkynyladenosine derivative represented by the following formula [V] having excellent storage stability and, to a method of storing the 2-alkynyladenosine in the form of that derivative. ##STR1## wherein R.sup.1 through R.sup.4 represent a hydrogen atom or a protective group, and n denotes an integer of 1 to 15, provided that R.sup.1 through R.sup.4 do not represent a hydrogen atom simultaneously.