InstructionThe step converting compound 10 to 9 was done over 2 steps. The first step is what we call a "protecting reaction" which installs a big functional group (TBDPS) on one of the alcohols in order to block it's reactivity. The second step is a reaction type that we have talked about in class. Is this reaction an oxidation or reduction? The conditions that they used have been discussed in class, what is the name of this reaction? In scheme 4, they show the union of 4 and 5 over 2 steps. The first step is creating a new functional group that we talked about in class on Monday. What functional group was made? Can you draw the mechanism for this type of reaction? (You don't need to show it using the actual reagents they used, just generic conditions that we discussed in class). The second step is doing a deprotecting reaction, so the OTBDPS group installed in a previous step was removed, reproducing the alcohol shown. In scheme 4, the conversion of 21 to 22 is done using the chemical DMP (Dess-Martin Periodinane). What type of reaction is this and what reagent/conditions could you use instead (that we've discussed in lecture)? This paper is a great sample of typical modern organic synthetic research. While it may be a little convoluted, I hope that you learned a little bit from this paper. What is one thing that you learned from this publication?